93 Bronco. Changed the brake Switch, Fuses and Bulbs. Still not working! What else could i check or change?

Question

The Brake light where the courtesy light is, above the back window, works when I press the brake pedal.

Thanks

Answer 1

you replaced the fuses, bulbs and the brake switch? Make sure you replaced the brake switch not the flasher !!! ok. Next thing to do will be find an open, go to the brake lights, find the wires , follow the wired toward the battery. If you know how to use a test light check por power at every 12 inches. Check relays and double check fuses under the hood too

Answer 2

I don't have a wiring diagram for your vehicle in front of me, so its hard to say exactly, but i can give you a few thing to maybe help you on your way. From what you say, I assume the stop lights are not working properly. If the 2 lights on the back have separate grounds, then it is not likely a ground issue. Ok, so here is what we can deduct, your brake switch is fine, because you have at least 1 light that comes on when it is pressed. So your best place to start is in the wiring between the brake switch and where it splits to go to the 2 separate lights on the rear end.

Having a wiring diagram and a DMM would be the best bet, and I would suggest you have someone who knows what they are doing find this problem for you, before you spend more money needlessly replacing parts trying to guess the right one.

Answer 3

Using a test light or meter, test for power at the rear light bulbs with the brakes on and test for a good ground. Probably a problem in one of the two circuits....inspect the wiring for cuts.

Answer 4

Check the brake light switch under the dash.Its attached to the brake pedal.You should get 12 volts in all the time and 12 volts out when you press the pedal.

Answer 5

Could be in the turn signal switch. Believe it or not, since the brake lights and turn signals use the same element in the bulb, the two systems are interconnected.

Answer 6

check the grounds at the wire harness in rear