1994 Chevy K1500 Bad Wiring?

15

Asked by Mar 16, 2015 at 08:50 PM about the 1994 Chevrolet C/K 1500 Sport Standard Cab Stepside SB 4WD

Question type: Maintenance & Repair

Ok... I recently bought a 1994 chevy
k1500... just recently I noticed my brake
lights aren't working as they should..
here is a list of odd things... that may or
may not be related....
-Stop light fuse blows
-Brake lights (meaning both rear bulbs
bright) are always on.... with or without fuse
as long as the headlights are turned on, but
tail lights, blinkers, n reverse lights are all
good.
-Stop Fuse blows intermittently. Some
times you can put the fuse in and it'll be fine
til you touch the brakes. Sometimes it'll
blow right away. I've even disconnected all
the rear lights at the wiring harness in back
and get the same results? Anybody think
they can possibly help... will be working on
it for the next few hours... please n thanks

2 Answers

65,075

Sounds like somebody has hooked up the brake light switch to a positive (+) feed. The brake light switch is supposed to complete the circuit to ground (-). I'd check around the headlight wiring and switch since the brake lights come on with the headlights. Does the 3rd brake light work as it should? It's wired independently from the other 2. You may be able to isolate the circuit by pulling fuses, with the headlights on, to see which fuse makes the brake lights go out. Then start checking items on that circuit. My guess is that the original problem was either a bad brake light switch or a bad turn signal switch. HTH. - Jim

15

Ok.... as is... still having the problem... one way or the other it's getting handled this weekend... again... I've got good lights on everything else... with the exception of my brake lights. N I believe the third brake light as well but I'll verify that.... I've got my chiltons manual... so I've got the wiring schematic But obviously someone at some point in time got in here with a lawn mower than decided to duct tape it all back together.. yay me! Thanks again for the help... I'll respond again with some pictures if i can?

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