Brake lights don't work
A friend of mine has a 1993 Silverado (V8) where the brakes lights just quit working. One bulb was blown and replaced, but this did not correct the problem. I've tested the brake light switch where one pair of leads open and close when the switch is operated, but I need the wiring diagram to know what the other leads go to.
I've also tested the brake lights from the harness in the rear and they work there. Besides the brake light switch, what else could be a problem?