Does anyone know which wire in the pcm wiring harness is the coil positive wire? I am trying to locate this wire so that I can tap splice into it, my tach driver and rpm activated switch for my shift light. I tried going to the dealership and talking with a knowledgeable tech for assistance which was somewhat helpful but not completely, as I was able to obtain a printout of the pcm pinout and coil system schematic, the problem is, there are several different color wires to the various coils themselves which are broken down into A,B,C & d coil drives that each recieve 12volts from a separate module located in the engine bay. I talked with 4SE FED who sent me info on this install and I attempted to follow his lead, but could not find an opening in the firewall to route the wiring from my glovebox which was where I have chosen to mount the componets.
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