The taillights, the dash lights, the backup lights and front marker lights all work intermittently while the headlights are both okay. All the bulbs for these lights are fine: they all work. It's just that there seems to be an interruption in the power to these lights. I've checked the fuses, the wiring and the bulbs. There are no obvious loose connections or unsupported harnesses that would cause me to think there is a rubbing wire causing a ground. What do I check next? Could this be a faulty PCM? Signed Tony C.
It could be a faulty PCM or just a loose connection from it.
Sadly, you have much more harness wiggling to go through before you end up at a repair shop.
good luck.
SOURCE: Marker lights do not work. 1994 nissan pickup SE
I would start by checking all the fuses, then check the headlight switch,test it for power as you did the tail light, then check the wiring coming out of the cab down the frame to the rear of bed check for a short but if all fuses are good then will not be a short, may be a bad switch and the most important is the bulbs, make sure they are good.
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sorry, the solution is so general and wide in scope that it wasn't helpful. I already knew that.
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