I'm building a 4x4 1986 Cutlass supreme that will have a 1989 Chevy 4.3 tbi and am wondering what all it takes to wire the engine harness into the Cutlass factory cab wiring ( engine harness and CPU to the factory cab harness of Cutlass). I'm drawing blanks for some reason and Don't know where to start... I'm new to having fuel injection on my projects and just need as much info as I can get on swapping from 3.8 olds to 4.3 Chevy using factory or near stock wiring for the project. Thanks