I just installed a one wire A/C compressor. It only has one wire going to it and I suppose its grounded to the block. (Merkur Compressor) What wire from the stock 86 TC wiring is power? I'm sure all I have to do is splice the power wire to the single wire going to compressor. It has a black wire and a blk/yellow wire. I think its the black yellow, but I am not 100% sure.
I tried to jump the A/C pressure switch on drier to test for power coming out of the wires at the stock TC compressor wiring, but I got nothing. Maybe I tested it wrong. All help appreciated.
Did you select correct position on heat switch in the interior? You should use every position except VENT.
And here is complete wiring diagram:
(http://www.abload.de/img/ford_klimadsk0.jpg)