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How To Install A Brake Light Switch

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Brake lights are controlled by the brake pad under the steering wheel. Whenever we press the brake pad, the brake light starts emitting light. This lets the driver of the car behind know you are hitting the brake and might stop. Now imagine if the car in front of you did not have a working set of brake lights. It might cause an accident. Has your brake light switch stopped functioning? Do you wish to know how to install a brake light switch? If yes, this article will be very helpful to you.

As we drive our car, it ages and so does the components of the car. The brake light switch is quite small and it gets damaged over time. A faulty switch means the lights will not emit light upon hitting the brake. Along with your and others safety, you can also get fined for driving around with malfunctioned lights. So, getting the switch fixed must be a priority.

How Does A Brake Light Switch Work?

When you press the brake pad, the switch allows the current to flow to the light bulbs. A switch is a connector that can either break a circuit or complete one. The switch bridges with the brake pad and the circuit, allowing the current flow. In some cases this switch gets misaligned or damaged completely.

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How To Know If The Brake Light Switch Has Stopped Working?

A brake switch helps in lighting up all of the bulbs. If all of them are not working, there is a high chance your brake light switch has stopped working. If this is the case, there will be no light emission from the bulbs. As we have discussed earlier, the switch can get misaligned which causes the bulbs to be emitting light all the time. Due to misalignment, there is also another consequence that could occur. The switch getting on and off at random times as it gets improperly aligned. This means, the circuit sometimes gets complete and sometimes it does not.

How To Install A Brake Light Switch?

The first step to replace a brake light switch is to change the old one. Make sure you have a flashlight, a set of needle-nose pliers and a wrench of size 10mm to 14mm. Remember that only some tools would be required depending on the car you have.

  • Remove the battery to prevent any type of electric shorts. Make sure to tuck the cables somewhere so they don’t make contact with each other.
  • Find the switch. It is a plastic box above the brake pad which has two or three screws on it. Now press the plastic tabs which will make the connecter come out.
  • If your switch is new turn it counterclockwise and this will cause the switch to disconnect. If your switch is old, you will have to use a wrench to remove the screws and bolts.
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Now, all we have to do is install a new switch so remember to take a good look at both of them and make sure they look identical.

  • If you have a new-style switch, align the switch and the socket holes. Insert the switch.
  • After that lock the switch by rotating it in a clockwise direction. And, be sure to connect the battery so it starts working again.
  • If you have an old-style switch, save the nuts of the old switch and just screw them on the new switch.
  • Tighten the screws and just reconnect the battery after.

How Much Would It Cost To Install A Brake Light Switch?

A brake light switch is quite cheap, generally ranging from $20 to $75. The labour cost would certainly make it almost double as the parts aren’t that costly. You can easily replace the light switch on your own saving yourself some money. It is very easy to replace a brake light switch and you do not need any prior technical knowledge to do it.


A brake light switch is essential for car safety and also the passenger’s safety. The brake light switch prevents a lot of accidents and without it you can get fined. It is not supposed to be ignored and fortunately, replacing it is also quite easy. No one can actually make an excuse to not fix it. The cost is also quite low and the consequences are very dangerous. I hope this article helped you know to install a brake light switch.