Brake light troubleshooting
#1
Brake light troubleshooting
On my '61 F-100 (non-uni) my tail lights and turn signals work on both sides, but my brake light only works on the LH side.
Looking at the wiring diagram it appears that the turn signal and brake light use the same wire and the same filament in the bulb... so I know the wiring and bulb are good since the turn signal works on that side.
This leads me to believe the problem must be in the turn signal switch. I have a friend who thinks it's the flasher unit, but I'm not sure how that could be.
What are your thoughts?
thanks,
Michael
Looking at the wiring diagram it appears that the turn signal and brake light use the same wire and the same filament in the bulb... so I know the wiring and bulb are good since the turn signal works on that side.
This leads me to believe the problem must be in the turn signal switch. I have a friend who thinks it's the flasher unit, but I'm not sure how that could be.
What are your thoughts?
thanks,
Michael
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#6
For a stock wiring harness, your left tail light turn/stop filament wire should be yellow with a black trace. Your right tail light turn/stop filament wire should be green. Your tail running light filament wire (and license plate light power) should be brown. As jowilker said, use a circuit tester to be sure. Good luck!
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