1994 ford f150 wiring

Asked by Nov 16, 2016 at 07:39 PM about the 1994 Ford F-150 XL 4WD Extended Cab SB

Question type: Maintenance & Repair

I have a 1994 ford f150 4x4 v6 problem is with my
tail,running,brake,backup lights don't work.   Put all
new bulbs and fuses in still doesn't work anybody
have any idea what the problem maybe or were I
need to start at thanks                     

2 Answers

185

Check for bad ground

22,070

Power is normally supplied to the drivers side back tail light and jumps over to the passenger side. Check for voltage and proper ground at that point. If no voltage, begin checking backward toward the fuse box until you get voltage. I suspect a ground problem though. Make sure there is voltage being supplied to the fuse. Corrosion sometimes disrupts the circuit at the box.

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