Brake lights not working?

Hello,

There is a stop light inhibit control relay (check the wiring diagrams) that goes out, here is a wiring diagram that will show you where it is and a guide on how to test it.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here are the relay locations (below). Please run this test and get back to us so we can continue helping you.

Is the "cyclops" working? High mount brake light? If no then check the stop light switch on the brake pedal arm, if yes, check the multifunction switch(blinker).

You need to test for power and ground arriving before concluding that. Here is a guide

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run down this guide and report back.

Does it have a "squeezer dealee" connecting the cable to the clamp? Clean it too! Sometimes you can flip, the top of the squeezer over, and get more pressure on the cable

as for the rear lighting, might not be burned out, lots of problems with the "twisty light holders"---on the holder, sorta bend the brass contact out some more.A little sanding on the circle, of the tail light side, smear on a little "dielectric grease". Presto, your fixed. Might as well do 'em all. It's only a matter of time!

THE MEDIC

This is a grounding issue, you will want to inspect ground wiring at both taillight assemblies to ensure wiring is connected properly and not dirty or damaged.

You find where it's broken first. That determines how it's repaired. You might install a new terminal, splice a cut wire, or if it's severely corroded, run a new wire. If the wire is corroded off a socket, replacing the entire socket is usually easiest. Some vehicles use printed circuits on the lamp housings and those can develop a hairline crack. Some can be repaired. Some have to be replaced.

Could you provide some hints or observations to analyze? Have you checked the fuses? Brake light switch? Do the other lights work correctly? Do you have cruise control? If so, does it work and does it cancel when you tap the brake pedal?

Have you checked to see if there is power to the light socket? There is no separate fuse, so if there is no power to the socket, there must be a broken wire. The only thing you can do is trace the power supply to locate the break.

There shouldnt be a seperate fuse if there is a broken wire wouldnt know where it was without looking. Also what are missing at the light the power or ground side of it?

The hot wire that goes to the brakes is shorted to ground. That is the only way for it to blow the fuse.

Here is a trick to put in your memory banks for the future:

A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a twelve volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it is not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.