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It's amazing what you see on the internet. I had no idea that you were even at my shop until I saw the new batteries in there. (I put the hold downs back on them) I would've done more, but for some reason, I couldn't find any keys to it.
Oh boy. I have the harness made but I'm short a few wires. The manual I have clearly shows the wiring diagram for 1989 diesel models and 1994 diesel models. The computer and harness are out of a 1991 truck. Some stuff was the same, some stuff wasn't I did the best I could, but I'm going to spend some time on google to see what I can see.
Not enough wiring to shift. After some research I see I left the power lead from the relay directly to the transmission unhooked. That may have something to do with it.
I'm not sure if that's the whole problem, but it's A problem.