Dash Wiring???

[HRobertson1]

So I bought a 86 GN car from a dealer. It was definitely raced in the past, but not much from those days remain on the car. I am trying to get the scanmaster that was left in the car working. Lights up 2.1 then goes dark, no signal coming from ECM. Got under the dash to trace some wires and its a nightmare. Wires cut and spliced, electrical taped, wires cut and just hanging, found a switch that will turn everything on without the ignition. A 2 stage launch control box not hooked up behind the radio. So my question....... Is there anyone that sells the wiring that runs behind the dash so I can just start fresh

 

[salvageV6]

Caspers sells a PARTIAL harness that should get the engine functions working. If the dash harness is bad what about the engine one that needs to work too?

84/87 Dash Harness Mate

84/87 Dash Harness MateOur mating harness is designed to plug directly into the stock GM engine harness found on the Grand National and T-Type cars. This harness plugs into the bulkhead and provides fuses and necessary wiring to run the engine functions. It is used mainly for transplants. Comes comp

www.casperselectronics.com

 

[HRobertson1]

Engine starts and runs great, and most everything seems to work except the scanmaster, and AC. Power and ground are fine to the wires of the scanmaster, but nothing to the white wire. I checked the orange wire at the obd port and nothing there either, but for some strange reason the car had a shift tach with light running to the same orange wire and that works fine

 

[salvageV6]

Does the car have the factory computer, lots of race cars had aftermarket systems?
That orange wire from the ALDL port goes through one connector C437 behind the glovebox to the ECM directly pin A8 of connector C2 at the ECM in the Pass. kick panel orange wire color all the way there.

 

[HRobertson1]

It does have a factory computer, TT chip that says 60lb ALCHOHOL 23*/21* 25+ PSI , but has
Stock wastegate, and at best makes 15PSI boost. I will pull the kick panel and check the pins and tone the wire out to make sure its going all the way.
Thank you for the help