How To Tell If Light Switch Is Bad

Is the bulb bad? Sounds silly but, you can get a bad bulb fresh out of the package. Issues with the high beams. If the individual breaker seems to be working fine, then you will need to check the main control lockout switch. If a voltmeter is not available, connect a light bulb to the breaker screw and the ground within the panel. Turn the ignition on/off fully a few times to make sure the airbag system passes its test and the airbag light goes out. If you're experiencing automatic transmission slipping, it can feel like you’re driving in a certain gear and then it changes for no apparent reason. The surface element control switch—also called a surface burner switch or infinite switch—turns the associated surface element on and off, and controls the heat level for the surface element. Check for loose or corroded wires. The moving parts of a standard light switch are enclosed inside plastic casing, so when the switch goes bad, your only option is to replace it. Testing a wall switch requires inexpensive devices and a bit of patience and logic. How an Electric Light Switch Works. You can see your brake light switch by looking under the dash, near the top of the brake pedal. The safest way for someone who knows what he or she is doing in a domestic setting is to isolate the circuit that powers the light. Re: How to tell if ignition switch is bad It's a 1991 engine so there's going to be some safety switches on it and like Don says,you've got to make sure they aren't the cause of the problem. You can use the information in that previous answer to check the motor centrifugal switch in your dryer if necessary. Toggle each switch until the light come on. The strip was "very hot" all the way back to its plug. List of common problems and symptoms you may experience due to a bad brake light switch: Brake light stays on when the car is off due to short; Gear selector can NOT be moved out of Park into R, N, D. I just moved into a different home and the light switch plate gets hot when the light with the dimmer switch is turned on. Your next check, if needed, is your pressure tank. Troubleshooting power supply and on/off switch then the switch is bad, it's not making the momentary contact to complete the circuit as it should. If a bulb is burnt out, fixing it means replacement. Depress the door switch manually with the door open to verify the interior lights are turning off and on; If the door switch is not shutting the light(s) off the refrigerator may get too warm. The diode then passes only the positive or negative half of the mains voltage to the light bulb. i do hear a little electrical sound when i'm trying to get it to turn off. If the ignition key gets stuck when turning on the car or removing the key, it may be a sign of a worn out ignition switch. A lamp switch has a brass screw to which the hot (black) wire is attached and a silver screw to which the neutral (white) wire is attached. Alternatives for smart switch. Here is a couple of different types of light switches. If you switch keys, you’ll need to tell the laptop which ones you have in place. Remove the screws holding the cover plate on the light switch with a slotted screwdriver. If the Expedition is anything like my Lincoln sorting things like this out can become frustrating due to the complexity. However, upon replacing the fixture, the light still does not respond to the switch. Practice a relaxing bedtime ritual (like stretching or journaling) and avoid using bright light in the few hours before your head hits the pillow, advises the National Sleep Foundation. Symptoms of a bad ground can range from a completely dead bike to electrical components working intermittently. Fast-forward to today and PDP Gaming has released MARS, the point-and-shoot light gun home console package that aims to bring back the fun of shooting bad guys at the arcades. Put a new bulb into the light fixture or plug a working lamp or other appliance into the switch-controlled receptacle to make sure the switch is faulty. Before proceeding, make sure you are comfortable working with electrical wires and switches. This is bad. A mechanical switch on a device is a switch with two states that you physically switch back and forth in order to turn it on and off. bad progress. The most obvious symptom of a bad neutral safety switch is when you can crank the engine in any gear. Oh yeah, make sure it isn't in gear when you do this. Further, this discussion assumes that you have only disconnected the switches and have. Below is an example of troubleshooting a lamp with a good bulb that does not turn on. 6L 17 Answers. If you know the light bulb is good and the switch will not turn the light on and off replace the door switch. bridge the connections. If a switch is bad, the brake lights won't operate and the transmission shifter will not come out of "Park" position. Once the chicken has gone bad it cannot be saved. That's why you can see in the PSU picture the 24V DC output as well as the 5V DC for the PLCs internal power and the universal AC input terminals. Brake lights not working. A 2015 uSwitch survey of British households found that a whopping 42% leave the TV on (up to 4. Ice Level Control Board. In the instance of a relay switch in your car that operates your headlights, you will be able to recognize that the relay switch has gone bad and is in need of replacement or it is being overloaded if your car's headlights are dull or weak. This is what you need to know. We've used the lights in my kitchen a bunch of times since my wife first had the issue, so it isn't consistent. Set the temperature in your bedroom between 60 and 67. If a voltmeter is not available, connect a light bulb to the breaker screw and the ground within the panel. A door ajar switch located near the door latch will require you to remove the door panel. The switch wires do not need to be disconnected at this time. You'll be able to troubleshoot a 'no headlights' and/or a 'no parklights' condition and decisively say that the headlight switch is BAD or not the cause of the 'no headlights' or 'no parklights' problem. Alternatives for smart switch. Checks good go to your brake light switch mounted on upper part of the brake pedal with a simple test light you should have hot (test light on) when the brake pedal is depressed if not and the ong wire is hot (15 amp fuse in the fuse panel under dash) says STOP by it you need to replace the brake light switch. One major sign of a bad ignition switch is that the instrument panel will not light up when the key hits the second position. Is the bulb bad? Sounds silly but, you can get a bad bulb fresh out of the package. If you are looking for an HVAC products supplier that will treat you the way you should be treated, turn to us. So, when the brake light switch fails, in most cases, the car will show various symptoms and a repair or replacement should be done right away. Well, with the possible exception of the light switch. Service Champions is the Northern California air conditioning company for homeowners who want industry leading technicians and a 100% money-back guarantee. [per later post]. They also include a car that stalls out frequently when idling and an ignition switch that is very hot to the touch. Nearly all of Mendocino County, a 3,878-square-mile chunk of Northern California, was without power from precisely 7:07 p. Check engine light is on: The ECM monitors all parts of the vehicle that could affect emissions. To tell if a circuit breaker is bad, start by unplugging or turning off all devices that are connected to the breaker. The headlight/running light switch is used as the trigger circuit which sends a signal to activate the relay. Take a closer look at a 3 way switch wiring diagram. If only one switch controls the light, purchase a single-pole dimmer. Tips & Warnings You must change a bad thermocouple as soon as possible. He recommends using a pair of sconces mounted at eye level on either side of the mirror to provide shadowless illumination. A corroded light bulb socket can be cleaned very nicely with a 1/2" copper pipe cleaning brush, found at your local hardware store. Westbrook will be given a green light to crash the offensive glass, but D'Antoni doesn't want him making random cuts, preferring that Harden know where his potential passing targets are located. Thus current will show for both an on and off condition, making you think that the switch is bad. If all fuses are good you may have a bad circuit board. Each is made to work under a limited load, with the ability to decrease a specific amount of current. How to Reverse Your Ceiling Fan with a Remote. They also include a car that stalls out frequently when idling and an ignition switch that is very hot to the touch. This electrical question came from: Susie, from Ft Myers, Florida. If your period is very light and there is only a small spot on your pad even after 4 hours, you can continue wearing the pad if you are comfortable doing so. If you can find the solenoid you can unplug one of the small wires while it is trying to crank over and see if it stops. The brake light switch, operated by a small plunger and contact switch on the brake pedal, tells the brake lights when to come on. Because it functions like a switch that controls the pump itself, the relay is also what brings power to the pump. Testing a Switch for Malfunction ► If the car isn't starting at the 'park' position, then hold down the brake and shift it into neutral. by Ed Ruelas on. There are many reasons why an engine won't start. Dodge Ram 1994-2001: Headlight Switch Problem. Ditch the bedspread. Then, unscrew the panel from the breaker box and turn on a digital multimeter, which is a small device used for testing voltage that you can find at your local hardware store. Touch your test lead to the now open points or adjacent stock rail. If you’re up for doing a little bit of sleuthing on your own before you make a service call for a broken compressor, try this simple test to tell if your compressor is bad or not: Grab a flathead screwdriver, pull your fridge away from the wall, and unplug it. Exactly how oil pressure is measured depends on whether the vehicle is equipped with an oil pressure gauge or a warning light. After the Sons of Anarchy brokered a deal between the Mayans and a rival club they are on. When the timer again advances back into the cooling mode, the compressor will start to run along with any air circulation fans. The brake light switch is mounted right above the brake pedal. Attach the continuity tester's clip end to the common terminal screw. How to Use a Dimmer Switch With CFLs and LEDs The old dimmer switches in your home were made to work with incandescent bulbs. It is a process of elimination. In some occasions a single diode can be to dim a light bulb when wired in series with the lamp. Figure out the maximum load for the dimmer switch you have. far enough in it to know if it all falls apart. List of common problems and symptoms you may experience due to a bad brake light switch: Brake light stays on when the car is off due to short; Gear selector can NOT be moved out of Park into R, N, D. This is done by attaching a gauge, such as an oscilloscope, to the wire that runs from the knock sensor to the car's computer. What do you do?. Symptoms of a Bad or Failing Backup Light Switch If your reverse lights are always on, never on, or function intermittently, you may have to replace the car's backup light switch. Check for loose or disconnected wires in the switch housing. Loose fuel cap or damaged cap. If it kicks over that way, but not when you turn the switch, it is probably a bad switch. Switch off your TV when no one's watching — that includes the dog. If it doesn’t, you know the noise is caused by another tube and you can repeat this procedure one tube at a time until you find it. Also see the Answer to Question 2 above. It is not possible to repair a window switch that is burnt out, but sometimes a careful cleaning might extend the life of a switch with fouled contacts for a few days or months. “The first thing someone should do [if the light comes on] is check and make sure something isn’t interfering with the switch. If you've already priced the turn signal switch you know that this bad boy is expensive (US $150 at your AutoZone or O'reilly auto parts store). Which parts get that power depends on where you turn the switch after you insert the car key. Buying the Right Timer Switch. If you feel warmth in a standard switch, it's a sign that the electrical flow is not proper, which can mean the switch is failing. In most cases, the issues with a broken light are. Yerington, NV, isn’t as bad because California freight is going down. The safest way to test a headlight relay is to replace it with a known good one. There's a metal oxide varistor on the back side of the switch that provides the surge protection, along with a collection of capacitors. In this article I'll show you how to test the headlight switch, on your Chevrolet or GMC pickup or SUV, with a multimeter. While it is possible to run on a failing fuel pump for a certain distance it will sooner or later no longer operate. still no water to the ice maker. ( A red wire and a purple wire connected) If you can reach the switch, turn it to crank or have someone turn it and see if the last connection lights the test light. From form to technology to flavor, JUUL is easy to use, as there are no buttons or switches. To check if the brake light switch is the problem pay close. For this reason, if you suspect that your vehicle's brake light switch may be bad or failing, have the brake lights inspected by a professional technician, such as one from YourMechanic, to. Replaced water inlet valve. That's why you can see in the PSU picture the 24V DC output as well as the 5V DC for the PLCs internal power and the universal AC input terminals. If it clicks or if replacement does not resolve the problem, your turn signal switch is bad. Now balancing the clutch and gas, attempt to pull away in third gear. A related topic for light switches is testing them. If it did not, the lights would stay on and not flash. Do not touch any part of the switch while it is energized. The brake lights, the most important lighted warning system on your vehicle, warn other drivers of your intentions to slow or stop. Hi peeps, My dimmer switch isn't working and I'm looking for some advice before replacing as I'm not sure if this will fix the problem. A corroded light bulb socket can be cleaned very nicely with a 1/2" copper pipe cleaning brush, found at your local hardware store. When installing a switch/outlet combo unit, you’ll want to know the difference between the two sets of wires coming into the light switch box. Twist them together with pliers and screw on a wire connector. If you don't have this on your bike, the vehicle will completely turn off while it's in use. It also has to turn on a switch (solenoid). Using a multimeter, you can diagnose your cord and switch from the comfort of your own home. They also include a car that stalls out frequently when idling and an ignition switch that is very hot to the touch. Each wire needs to be connected to the proper terminal screw on the light switches. 1 day ago · As Mayans MC barrels toward its Season 2 finale, the titular motorcycle club is in a precarious position. Page 1 of 2 1 2 Next >. 2) to activate the garage door opener light. Exactly how oil pressure is measured depends on whether the vehicle is equipped with an oil pressure gauge or a warning light. Harley Davidson Touring: How to Reset Your ECM. If you have none there, you’ll need to trace back from there. Replace as needed. and how to get rid of it. Disconnect both black wires from the switch if they don't appear to be loose. If you had a ground fault interrupt breaker on the circuit, it would blow but it is very very rare to have this on a normal light circuit. The Harley neutral light grounding switch changed at which time neutral light came on only when in gear. Of course, when the burners don’t light after 2 or 3 tries, the furnace will shut down. Around the turn of the 20th century, when electricity was first being used to light rooms at the flip of a switch and make images move onscreen, the idea of using technology to contact spirits. Decide if you want a sliding switch, a toggle switch, rocker switch, or even a spring loaded switch that returns to off when released. I have a 1987 Ford F250 Regular Cab 2w drive with 4. These are the most common problems associated with a faulty ignition switch: Engine dies: This is one of the most common symptoms of a bad ignition switch. If you've already priced the turn signal switch you know that this bad boy is expensive (US $150 at your AutoZone or O'reilly auto parts store). T he interior light in most refrigerators, and the fan in some, is controlled by a door switch. I have replaced the stop light switch with a new one but the problem still persists. If the meter reads voltage on one side, but not the other, the fuse is bad. Function setting: Ohms (continuity). The multimeter can also do this, but it has many, many other functions. With these diagrams below it will take the guess work out of wiring. Fill tube not frozen. Turn the power off while uninstalling the switch, then turn it back on for testing. Over and over, people want to know: “How to wire a bilge pump with float switch?” Since we’re boat switch people, it’s most often the confusion arises from whether or not to use a 3-way switch to wire the bilge float switch through the switch at the helm. All you have to do on a Chrysler vehicle prior to 1996 is turn the ignition switch on, off, on, off, on, off, on and look at the check engine light which will be flashing trouble codes starting with the lowest one first and increasing to the largest one last. If the brake light switch is functional, you have to check for a bad electrical ground (some car models have the switch provided ground). When you first turn on the vehicle if should be cold and as the vehicle warms up it should slowly rise to the midway point between cold and hot. Financing Available. If only one switch controls the light, purchase a single-pole dimmer. Fast-forward to today and PDP Gaming has released MARS, the point-and-shoot light gun home console package that aims to bring back the fun of shooting bad guys at the arcades. Test the light bulb for the presence of 110 volts AC with the meter. I have checked to high level stop light and all appears OK. The length of light we experience each day wouldn’t actually. You will know when you horse is ready and understands it. It will certainly reduce the lifespan of the HDD and the CPU. A multimeter can be used to make certain that it is indeed the ballast itself that has gone bad. A corroded bulb can be cleaned with a wire brush. then go for there page 160 of the 95 shop manual the safety switch is easy to test with a OHM meter. Your car may also seem like it’s struggling, is suddenly underpowered, or isn’t accelerating like it should. If you have none there, you’ll need to trace back from there. Surge protectors do not heal. However, if the switch fails, it does not close the circuit, so there is no continuity. One of the most common symptoms of a faulty headlight switch is issues switching between headlight modes. Tip If you don't have a 12-volt power source or you are uncomfortable performing the test on your own, you can take the flasher to a local auto parts store and ask that the store test it for you. Check engine light is on: The ECM monitors all parts of the vehicle that could affect emissions. More often this problem comes from someone having Replaced a switch wrongly. If the tester does not light, the continuity has failed, and the electricity cannot pass through the switch, so you'll need to install a new one. there will be a live in a live out and a switch wire. This will help you decide whether you can get a better rate by switching. when i turn the key nothing happens. Symptoms of a Bad or Failing Power Steering Pressure Switch. 5 out of 5 stars 47 $24. I have a three-way switch for it, one in the kitchen and the other in the garage. Because the red wire is found in both circuits, it must be the power. From cutting-edge consoles to top-of-the-line accessories, these are the best gadgets for gamers in 2019, including gamer gadgets for PC, consoles, and more. Allow the pump to fully cycle by opening a nearby water faucet. For example, light switches allow current to flow through the wires and the bulb, lighting up the bulb. The brake light switch is probably one of the main cause that triggers BAS/ASR light problems. Not all light switch problems require the assistance of an electrician. Measure the height of the garage door sensors to get the required height of objects to block it. The common single pole switch is one of the simplest electrical devices that you have in your home. When that happens, more questions arise than answers, some even giving. A faulty light bulb is the most common cause of light fixture failure. 6) Remove wires from existing switch and connect them to the new switch. Press and hold the Mac’s power button for 5 seconds. The third brake light does not flash with turn signals. 8) One switch I replaced because the lights were flickering, that switch is now 53. The safety switch is typically wired into the low voltage thermostat circuit as shown in Figure 2 of this installation manual. The other type of switch works hydraulically and is operated by the pressure of fluid in the pipes when the. Sign up for our free. Most vegetables, cheese, nuts, and spices are safe to be chopped, but don't expect. Replacing a bad light switch. Pull the female wire connectors from the male side terminals on the start relay. The first thing that you should check is that the switch hasn't. L ight switches are simple in design. Have you ever wanted to know if a light is about to blow out, and change it before it did? Here are a few common signs to be prepared. 4 way switch wiring comes in real handy when you would like to control a light fixture from more than two locations. 3) to lock the garage door opener (prevent it from running). Make sure the switch you use can handle the amount of current you need Decide if you want an off position or not. You should get a short. How to spot a bad breaker. Interested in a 4 Way Switch Wiring Diagram?. I noticed the dome light was burned out so I bought a new one and install it. Also check for any discoloration or darkening of the chicken as this is another way to tell if it is bad. Your dimmer switch is overloaded. Other times Luigi must use his new suction shot to pull away debris blocking his path. Otherwise, the switch is mounted on the transmission and comes on when reverse is activated. If a light fixture fails, always make sure the light bulb is screwed in tightly and is not burned out. Once you know what type of lights you have, you can proceed with your Christmas decorating and be sure that all your replacement bulbs are the right type. Locate a Bad 4-Way Switch. If the surface element still doesn’t work, the surface element switch is likely defective. Forum adverts like this one are shown to any user who is not logged in. They want to charge me $160 to fix the cruise control switch, but tell me that my van will probably be recalled and I'll be reimbursed for the repair. If there is someone in the seat, the light should turn off, signifying that the system is armed. Putting the key in the ignition switch and starting the car feels like second nature. It is a process of elimination. Nearly all of Mendocino County, a 3,878-square-mile chunk of Northern California, was without power from precisely 7:07 p. The neutral safety switch is there so you can only start it in park or neutral and not in a drive gear, obviously for safety purposes. Another test to determine if a breaker is bad involves taking the wire that is hooked into the breaker and connecting it to another working breaker. If you have power to the switch while the light is off then you know there is an issue with the circuit board and the view full answer. are especially affected. 5) If it is a single pole switch you should have 3 wires connected to it, the feed, the switch leg and the ground. Release the button. The only cool thing about the deck light is that it has both front and rear switches, wired up like you would have in a hallway with a switch at each end. Others use their baths less often. 3 Way Switch Wiring with Light First. My Lincoln has the normal door jam switch but also has 2 switches in each door handle assembly along with a keypad and dome light operation is not based completely on the door jam switch. Before you start the job, be sure to take these safety precautions: Switch off and tape off (or lock out) the breaker to any circuit being worked (turning off the wall switch is not enough as someone could inadvertently switch it back). How to Know if Your Bulbs and Dimmer are Compatible It's a common misconception that any LED dimmer can be paired with any dimmable LED light bulb. If the needle does move, reattach the wires, reinstall the button, and. Saturday, when PG&E pulled the plug on 90,000 people. The neutral safety switch is a safety device that only allows you to start your engine when the automatic transmission is in either Park or Neutral. Step 1: Connect the scan tool to the OBD – II. If a switch operates this receptacle, then it is OK. Usually when this happens, more than one light will have tripped so check a few light switches and if none of them turn on, check your fuse box. "How to Troubleshoot a Wall Switch for a. I need to know how to test a main breaker to tell if it is bad or not. Light switches are the easiest of all items to wire. Connect a test lead between terminal number 5 (grey wire) and ground. To determine if the light switch is defective, use a multimeter to test it. Troubleshoot No Head Lights and No Park Light problem. Changing a Light Switch in a mobile home Hello, I need helping figuring out how to change out an old light switch in a mobile home with a new toggle switch, just the regular one that has the 3 screws you attach the wires to. The switch plunger should be fully depressed and not visible at this time. The code is gone now and your check engine light should be off. Follow these steps to find which switch is bad. Luigi’s Mansion 3 Is The Kind Of Nintendo Game My Switch Has Been with flashlights and revealing hidden objects with a dark light return. A vehicle that does not click when it is turned over may have a bad ignition switch. The bands around the components indicate resistor values with a color code. An exception to this are mechanical e-cigarettes (mods) which contain no electronics and the circuit is closed by using a mechanical action switch. The fuse may need to be removed from the scooter and held up to a source of light to determine if it is burned-out or not. Confirm the reverse switch is not in a neutral position. It could also be a bad starter solenoid. A 3-way wall switch controls a common light or set of lights from two separate switch locations. Others use their baths less often. Turn off the power switch to the bulb; Rotate the tube 90 degrees until it stops turning, then slide the tube downwards. When fluorescent tubes don't light up, it could be a bad tube or ballast. This design is optimal for piercing a wire, testing a fuse or checking the surface charge of a battery. If the test light comes on during these tests then the switch is OK. Turn off power to the switch at the circuit breaker. Wearing a regular or light flow pad should last anywhere from 4-6 hours. Other times, a red check engine light or a blinking check engine light may occur. As Susie Boyt sketches out in My Judy Garland Life: A Memoir, it’s very easy to pick out the differences between the two. Some folks will tell you that a bad cooling fan relay can also cause this. A multimeter can be used to make certain that it is indeed the ballast itself that has gone bad. In some cases, a yellow check engine light may indicate that a problem exists, but it's not very urgent. No bells, no whistles. Is the bulb bad? Sounds silly but, you can get a bad bulb fresh out of the package. Twist them together with pliers and screw on a wire connector. Your dimmer switch is overloaded. A basic light switch has two terminals and sometimes a ground terminal. retailers distributing throughout the EU from the U. Brake light switch problems. Use it as often as necessary to relieve pain or moisturize skin. The ignition switch supplies power from your battery to most of your car’s electronics. That switch has some intricate little mechanisms in it that are tied into that little LED light and, unless you're a jeweler, it's basically impossible to replace just the bulb. If your amplifier is out of range on HV reading, or if the amplifier HV sags excessively (beyond manual specifications) when transmitting normally, you should seriously consider 240V wiring. Your electricity meter will tell you how much you actually use - rather than the estimate your supplier uses for each bill. Regular tobacco cigarettes contain 7,000 chemicals, many of which are toxic. Knowing how to reset a circuit breaker will make you seem awesome to the clueless. Reversing the direction of your ceiling fan is a budget-friendly and eco-friendly way to make your home feel warmer in the fall and winter months. A Little About the Light Switch. Faulty wire grounds are a very common problem, but can sometimes be difficult to track down. you know the start switch is good or bad. Clean them up or tighten them as needed. Christmas light bulb testers are a cost effective way to find and replace all the bad lights in your strand and will save you lots of time as well. When I finished installing it I reset the breaker and tried the light switch. If the headlight switch fails or wears out it can cause problems operating the headlights. The continuity test is helpful in determining if contact is being made. So, while this deck light is sort of lame, it has promise. turn off power to the light at the breaker panel box and remove the socket Turn the power off to the socket. Test the switch with a. Light fixture socket is bad. The bulb retainers are an infrequent cause. Replace the switch if there is excessive resistance in either position. A replacement pull chain switch is only a few dollars and should screw into exactly the same location as the old one. Start with the Dome Light or Dimmer Switch When your car interior lights stop working, the best place to start is also the easiest fix. Bought new one. Unscrew the switch, and pull it from the electrical box. The brake light switch is probably one of the main cause that triggers BAS/ASR light problems. Test the GFCI Operation. Simply put a test light on the out coming wire that is not hot and depress the brake lever. Lamp cords, however, don't have colored wires in them. The airbag system is shut off when a problem is detected so that the airbags don’t accidently go off because of whatever problem was detected by the computer. You will know when you horse is ready and understands it. If the blower motor blows air out the vents when manually set to ON then you know that the blower motor itself is good and something else such as the limit switch is causing the problem. Using a scan tool is the easiest way for check engine light reset. Many Ford type solenoids get their ground through the bolts which hold them to the vehicle body, so when replacing a solenoid, make sure the bolts are clean and. When the pedal is depressed, the switch automatically closes to turn on the brake lights. Now that I have an S&S 107" motor in my FXRT I reset the VOES to 7" and it seems to work for me. You would have to wait for one to arrive, and pay an expensive hourly minimum, and a trip charge. If a bulb is burnt out, fixing it means replacement. Is the breaker tripped? Use a non-contact voltage tester to see if you have power to the switch. A basic light switch has two terminals and sometimes a ground terminal. While many tactical flashlight users swear by these features, Mike recommends keeping things simple.