Electrical problem V8 Two Wheel Drive Automatic 32500 miles
my brake lights do not work, but the cab brake light does. The flashers will work and turn indicators also. So I know its not in the fuse, and changed out both bulbs.
Just found out a few days ago. Brake lights do not work but all other signals and the cab brake light works.
Tested everything, switch is fine, receiving power to the fuse panel under the hood and in the cab fuse. Grounds look good, bulbs good. No visible wiring issues.
What would you recommend as a way to test the switch? I have spend 8 hours testing every wire in/out of the turn switch and the fuse panel to no conclusions. I tried jumping across the switch itself to no success. Tried unplugging it to no success.
The white(brake power) is good coming out of the switch going into the fuse panel and into the turn lever itself. The CM brake light tests good. The rear brake fuse jumps up and drops back down to zero on the multi meter. Testing the backside of the fuse panel blue wire tests good 12v when pressing the brake pedal which is odd. From the wiring diagram all this doesn't make sense. I am looking for a way to make sure its the switch itself before purchasing one. Any ideas would be appreciated.
Anyone figure this out yet?
Thursday, February 25th, 2021 AT 5:49 PM