Connecting TPI ECM to LG4 body
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Joined: Nov 2001
Posts: 1,526
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From: Cleveland, OH
Car: '87 Camaro LT
Engine: 355 L98
Transmission: T56
Connecting TPI ECM to LG4 body
I am trying to find the pinout for the under-dash connector that mates up with this connector in the TPI harness. I need it to connect the ECM to the SES light and ALDL connector but this connector is not shown on any wiring diagram I've looked at. The body is an '87 LG4. Also, the '87 ALDL does not appear to have a wire in the "M" spot for serial data. Will I need to run a wire there from the ECM in order to data log? Thanks for any help!
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Joined: Nov 2001
Posts: 2,266
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From: Canada,Ont
Car: 1987 TransAm Ttop
Engine: 2005 LQ4
Transmission: Ls1 T56
Axle/Gears: 3:54
Re: Connecting TPI ECM to LG4 body
When I swapped from lg4 to tpi my old lg4 aldl was taken out and replaced with a new one with the tpi harness i got.
I bought my tpi ecm and harness together as a kit on ebay from a guy that was well know for selling thirdgen parts and reman parts aswell.As for the ses light i had to from the wire from the ecm all the way upto the dash cluster and splice it in to the correct wire for ses light.I also had to do this for the park/neutral wire,cruise control,vss,and torque converter lock up.That was the extent of my swap.Everything else was plug n play with the ecm.
I bought my tpi ecm and harness together as a kit on ebay from a guy that was well know for selling thirdgen parts and reman parts aswell.As for the ses light i had to from the wire from the ecm all the way upto the dash cluster and splice it in to the correct wire for ses light.I also had to do this for the park/neutral wire,cruise control,vss,and torque converter lock up.That was the extent of my swap.Everything else was plug n play with the ecm.
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