Originally Posted By SomeCarGuy
The one with the upgrade to factory electronic ignition has the wires for a dual field alt. i suspect that is the three wire alt you are asking about?

Its an excellent harness. Ive had several.


need to jump on this post I have same issue and have the harness with dual field alt what ballast resistor do I need I have the two prone type the harness has the four prone hook up !

Thanks Tom C.