Hi there,
The wiring harness in the car is custom made for us. They do have a few extra circuits installed for different applications. The newer spec cars have an extra circuit for backing-up lights which is necessary in some states.
If you are having a problem getting it hooked up for your particular application, give me a ring or drop me an e-mail explaning exactly what you are using and I should be able to guide you through it. Although the car is set up to use a MSD ignition it can be wied for anything. There are 4 wires in the car for this . You woll find a green,purple,orange and black on the eng harness which correspond to the MSD colors. You will also find the corresponding wires under the dash by the fuse box on a different loom. You could probably use the orange and black for the coil and possibly the green to supply the feed to the distributor. I am not sure what your application requires but it should be easy to figure it out.
This will probably be better to explain on the phone or on a detailed e-mail with all the facts.
Regards Reg
561-752 3693
www.Backdraftracing.com