I am swapping in a 5.7 speed density motor into my 84 LG4 Camaro. What do I need to modify on the dash harness to make it work? I have the Painless wiring harness for speed density TPI. I also have the 90-92 ECM. Thanks in advance.

 

You can use the ALDL that Painless gives you, just remove the light that comes with it, and route it behind the radio. Most other wires like the P/N switch, Brake switch, etc... can be spliced into the harness at C207 under the passanger side dash. This is the connector that meets up w/ the ECM wires before going out the PassThrough behind the passanger fender.

I got to warn you, if you run the wires through the factory passthrough like I did, the harness is too short. You will either have to drill a hole in the firewall, or lengthen the harness.



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