is there any way to modify the jspec t2 wiring harness to work on my car

 

your going to have to disect it. the best way, would be to do this while the engine is out of the car. lay it out where the plugs need to go. hook em up and start wrapping it together one section at a time.

buy a LOT of wire loom and electrical tape. since you will also be wrapping it back together yourself, it'd be best to put more protection in the HOT areas such as around the turbo and where harness is close/touching the block.

be carefull not to cut any wires and be gentle, b/c i'm sure it is very brittle.