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

'94 engine harness in a '97 z28???

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Old 07-08-2009, 04:22 PM
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Default '94 engine harness in a '97 z28???

Tried searching but got nothing.

My buddy is going to be swapping a '94 LT1/4L60E, wire harness, and PCM into a '97 z28 roller ('97 body/chassis harness and interior harness is all there, engine harness is not).
My question is what will he have to do to make the '94 engine harness work with the '97 chassis harness?

I see that I might have to do some rewiring to the C100, C210, C220, and C230 connector faces. But it looks as if the major difference is that the '95-'97 harness have an extra plug located on the passenger side shock tower (C105 plug). It has a few TCS and AC stuff which doesn't concern me but the pink wire (Power feed from injector Fuse #10) has me concerned.

These are the links I am using right now to identify the differences...
wire harness
http://shbox.com/1/harness.htm

connector faces (click on each tab below)
http://shbox.com/1/harness_connector_faces.htm
Old 07-08-2009, 04:36 PM
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There are a couple of plug/circuit location differences, but as long as you find and match up the needed circuits, you should be ok.
Old 07-13-2009, 01:54 PM
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Default Update.

I used the wireharness plug diagrams via shbox's website. It was an easy swap. I only had to relocate two wires to get the car running.

1) Relocate the pink wire from C105 cavity B to C100 cavity K (power feed from injector fuse 10)

2) Relocate the pink wire from C220 cavity E to C230 cavity G (power feed from PCM ignition fuse 13)

Car runs, needles move. I'll report if I discover any other necessary wire changes.

Last edited by ss.slp.ls1; 07-13-2009 at 03:55 PM.
Old 07-13-2009, 02:12 PM
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Yea there isnt much of a difference between the two..



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