To replace a vehicle's brake light switch, locate the switch on the brake pedal linkage and disconnect the wiring harness. Remove the old switch and replace it with a new one.Continue Reading
The brake light switch is usually located at the bottom of the brake pedal assembly. Reaching it may be difficult and a flashlight can help find it more easily. To replace a brake light switch, use a new brake light switch, flashlight, and needle nose pliers.
Insert the key and turn the ignition to the on position. Turn on the headlights and step on the brake pedal while asking a friend to check for brake lights at the back of the vehicle. If the lights are out, find the brake light switch at the bottom of the brake pedal linkage.
Disconnect the wires coming out of the brake light switch using the needle nose pliers. Remove the switch.
Replace the old switch with the new switch. Reconnect the wiring harness.
After replacing the switch, turn the ignition to the on position and turn the headlights on again. Test the brake lights to be sure they are working properly.