Quote:
Originally Posted by Jaysonb
My 85 has a 3 wire hookup, one of the wires went to the egr solinoid for some reason, and my transmission works as it should without that hooked to anything. I'm not sure the wiring on a 85 and 86 is the same though. Is the harness for the 700r4 still in your truck? I'm not sure if it's the same for 86, but the 85 set up is pretty basic with a low vacuum switch, and a brake switch to control the lock up.
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Yes I still have the wiring in my truck minus the low vacuum switch shown in the diagram on the left.
The 1989 diagram on the right shows 2 different wires coming from the ECM and one from the brake switch. This is where I'm confused. I was hoping Hatzie would hop on and provide some input knowing how good he is with wiring problems.