I believe most brake light switches are located under the dash above the brake pedal.
Brake light switch stuck, defective, or out of adjustment.Brake light switch stuck, defective, or out of adjustment.
where location of brake light switch on 1989 chev, truck.
Check the bulbs, the fuse and the brake light switch.
Check the brake light switch located under the 1989 Toyota Corolla. If the switch is stuck the parking light will continue to stay on.
Check bulbs, fuse, bad ground, brake light switch.
adgust the brake light switch at the brake pedel under the dash
If both brake light bulbs fail to come on when the brake is depressed I'd check first to see if there may be a fuse that controls the brake light circuit. If there is no fuse and/or the fuse appears to be okay, the most likely culprit is a faulty brake light switch. This switch is located up and behind the brake pedal. There is a plunger that moves in and out acting as a switch when the brake pedal is depressed. It is this switch which possibly may be the culprit.
There is no adjustment on 1984 thru 1989 carrera. There are 2 brake light switches which are wired in parallel and are located on the brake master cylinder.
Assuming you have already checked the bulbs and sockets, next check the fuse, then check the brake light switch, then check the signal switch.
the brake light wiring often runs through the turn signal switch i would test power going in to the brake light switch on the pedal and power coming out when pedal is depressed if power is ok suspect turn signal or hazard switch
Usually at the upper end of the brake pedal under dash
I have a C15 van (1989) and its a microswitch on the top of the brake pedal. You need a mirror or alternativley stand on your head to see it. Nick