GDM S2K

im installing my injector driver and one wire has to go to each of the injectors, now on the OEM clips there is a yellow and black on each one but at the ecu there are 2 yellow and blacks. anyone know which of the 2 is the correct 1?

Ek9

You're doing this without a shop manual? Yellow/Blk = constant 12 volts.

The other wires are grounded by the ECU to make the injector fire. What exactly does this injector driver do?

B9 (IGP2) is the yellow blk that goes to a junction connector and is split to the other injectors. B9 is the actual connector number. Shop manual will show what pin it's on.

GDM S2K

im using the manual but like I said there are 2 12 volt constants I wasnt sure if one or both went to the injectors.

I have 1600cc low impedence injectors I need it to get my car to idle and actually use the injectors for what there ment for

Ek9

I see so, you'll use the regular injector outputs to drive an additional driver that can handle low impedence injectors. Got it. Do you have to worry about phase when you hook that up? By that I mean, which side of the injector is ground and which is 12 volts?

I was under the impression that when a car won't idle with big injectors, it typically means they're too big. That the ECU can't control them well enough for the small amounts of fuel that idle requires. You're what, 5 times larger than stock? Are you actually making 5 times more HP than stock?

Full wiring diagram with colors is in the fuel injection section. I doubt it matters much which yellow/black you use as long as it can supply enough current. Your low impedence injectors will probably need 3-5) times the current of the stock ones. (I'm assuming 10 ohms versus 2 ohms).