Reply to "What wiring harness. Help"

Step one, if you do not have a wiring diagram get one. Even with the diagrams, and between the years some things are still different so the documentation is never 100% trustworth. I noticed that a few of my wire colors differed from the wiring diagram but the general circuts were documented. Having a guide is better then no guide. With few exceptions, most circuts are not complex (one of the nice things about a 30 year old car).

Being a system of quesitonable original design, some things defy normal sense but when wired properly they do work. Get a good voltage/ohm meter and start tracing the circuts. Best to use a A/C battery charger so you do not wear down the battery.

It is a time consuming process to trace each circut but the options are limited. Figure this to be a good winter project. Best to try and save the original harness. Easier for future troubleshooting or for other owners to deal with stock systems then a homebuilt replacement. One thing that will impact future resell value.

As mentioned earlier, check the grounds also the fuse box is known for not having good tension on the fuses creating interesting conditions.