Quote:
Originally Posted by 777funk
Has anyone had problems with the electrical system on an 87 300dt?
I have one and the fuse box has all kinds of funky things going on. I measure '0' volts on several fuses (5 or 6) and I'm measuring the before the fuse side of the circuit so it's not a bad fuse.
I've heard things about wiring harnesses going bad. How do I start to diagnose? Where do I begin to look?
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Do you have the factory tech manual on cd rom? It has all the wiring diagrams and will tell where you should see voltage. The things you are measuring may need the key in the run position or may need to have conditions met to be able to measure any voltage at the fuse. The cd can be a bit pricy but once you use it a few times it becomes priceless (imho) I agree with the fact that the usual places for failure are in the door and lift gate hinge areas.