I'm in the middle of installing 720cc secondary injectors on my rx7. This is an 88 S4 turbo II. The injectors I have are low impendence and the car came stock with high impendence. I am going to wire in resistors, the only problem is out of the two wires per injector which one does the resistor get wired into? It seems one wire is black and yellow and the other is a yellowish brown.

 

It's a bit strange. but the resistor can be placed on either of the two wires.