hey guys, so im wiring up my resistor pack and im looking at the injector wires and each one pretty much has a different color wire. could someone tell me which wire is the signal wire, and which wire is the power wire!

wire A:
wire B:



if you could either go out and tell me which wire is which, or take a picture of your injector wires (one should be black/white the other should be white)

Each signal wire will probably be different. All constant power wires should be the same. I think on my Aristo, all power wires were solid black. The signal wires were all different.

true. but for some reason all of my wires on the injectors are different colors so i cant tell which wire is which. since the plug only goes on one way, i could find out if its wire a, on the left. or wire b thats on the right. if you were looking from the driver fender to the injectors


heres another plug:



i did notice that alot of the wire A's are stripped and wire b's are solid. however there is a clip with 2 different wires with strips so i have no idea.

just speaking from aftermarket EMS experience, the polarity of the injectors doesn't matter.
you may want to match up the wire colors for your stock ecu purposes, but for the actual firing of the injector, it just fires when it sees 12v and ground. it doesn't care which way the electricity flows. google it.

this is correct, what ever you go with just keep it constant across the board.

if i had to hazzard a guess. black with orange tracer is the constant. the other wire is the signal.

There is no polarity, but you still have to have the resistor lead on the constant hot side since the resistors share power! If they were individual resistors, you could wire them in series with the injector on either side.

im just going to get my multimeter out once i get my fuel lines hooked up to find the constant 12