hey guys,
i'm not an electronic wiz so i need help wiring a mkiii resistor box. my question is: how do i tell which of the 2 wires from the injector is the power or from the ecu? thanks.

 

The black/orange is the power.

You will just take power out of one of the 6 black/orange wires as you don't need it for every injector.

Jonny

 

thanks jonny. time to upgrade to larger injectors. =)

 

Just make sure you get injectors that fit your rail. Mine don't so I have to wait 3 weeks for the machine shop to bore out my fuel rail properly

Did you understand what I meant about using just one power wire on the injectors? Just cut and tape off the other ones so they don't get in the way...

Jonny

 

got precision ones, mitsu style which should drop right in.

yes, understood. i did further research last night. from my reading and what you've just stated, i just need to pull one power wire from one of the injectors, tape the rest off, then connect each of the remaining wires from the box to two of the injectors. i believe 1-2, 3-4, and 5-6. running AEM btw. correct me if i'm wrong.

 

I don't know if the MKIII and MKIV resistor box are different - but this is not how mine is done.

I have power to power, then one side of each injector plug goes to the resistor box, and the other side goes to the ECU. I am also running an AEM.

Jonny

 

so your running a mkiv box. i'll do more research...

 

Yeah, I did some reading. The MKIV box has 6 wires + 1 power. I guess the MKIII box has 3 wires + power.

Good Luck man,
Jonny