On my 1978 Ford F250 the instrument panel lights come on when the brake is pressed, I have replaced the main front to rear wiring harness under the truck, and this did not fix the problem, also I unplugged the front harness that goes to the front parking/turn signal lights and the problem still exists. I was wondering is anyone has heard of the instumnet panel having a short that could cause this problem? It seems that the brake lights/turn signal circuit is shorted with the running light circuit somewhere.
When brake pedal is pressed instument panel lights come on Help!
Mar 01, 2007
5 Replies
Look for a trailer light connector and inspect is wiring and terminals, maybe corrosion or a short OR there could be corrosion in the tail light bulb sockets or a short. Or improperly hooked up radio/player maybe,
>Bad ground?
Replace both your taillamp bulbs and report back.
Have you checked for any wires shorting on the brake pedal linkage?
Could also be a taillight assembly shorting the brake lights to parking lights. Have a helper press the brake pedal, do the parking lights come on as well? If that is the case I would unplug both taillights and try again. If that fixes it, you know where to start looking for an issue now.
good luck,
nate
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