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

hopefully my last 24x question about repin

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Old 01-09-2013, 05:48 PM
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Default hopefully my last 24x question about repin

went threw harness a second time rechecked every wire. Need to know where these two go.

ls1 red 9 fuel pump relay control:chart says fuel pump relay
ls1 red 10 engine speed output:chart says tachometer

I'm using efi's chart and 2000 pcm and 97 harness
Old 01-10-2013, 04:55 AM
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LS1 RED 9 fuel pump goes to connector C220 cavity J.
LS1 RED 10 tach output goes to connector C230 cavity D.

The GM schematics would help in this situation.
Old 01-10-2013, 05:13 PM
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what I have from searching is for my 2002

c220 J is starter enable relay(vats)
c230 D is uart serial data primary(v6)

Ok did some more google'n found out what my problem is. the year of my car!!!!
97' LTx c230 D is tacometer signal to instrument cluster
and c220 J is fuel pump relay control

Now I have to figure out what the hell I'ma do now.....ugh
Thanks Mike for your help.

Last edited by daddyoisback; 01-10-2013 at 05:36 PM. Reason: more info



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