Also what do i do with the purple/white wire labeled crank signal that used to feed pin C9 on the old 16196396 ECM that was original in my truck, which is a 1994 gmc k1500.
I also took the orange 12v battery wire that the guide at the beginning of this thread says to put into the brake switch input to the pcm I instead installed it into pin F15 where my wire diagrams say the new pcm is supposed to have 12v ignition. The reason for this is my trucks harness only has one 12v ignition wire and that was easier than creating a new circuit. That should be fine right? if it drains my battery ill fix it unless there is something that could go wrong that im not seeing?
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