LT1-LT4 Modifications 1993-97 Gen II Small Block V8

PCM HELP !!!! Working on it right now

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Old 10-22-2008, 05:49 PM
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Default PCM HELP !!!! Working on it right now

ok i am putting a autometer tach in and i pulled the pcm out and there is a blue,red,gray and black plugs that are plugged in the pcm, which wire on what plug is the tach output wire that i tie into for the tachometer ?
im working right now on it and waiting for a reply
Old 10-22-2008, 06:33 PM
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google the wiring diagram that your looking for




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