I'm looking to find which wire is the negative one for the injectore, anyone know?

 

May I ask why you are wanting to know. Also, are you aware that powerstroke injectors operate on 110V?

 

The company I work for has a water/meth injection kit that I was pondering putting on my truck.

It keys off the duty cycle of the injectors.

I was not aware the the poerstrock runs 110 volts, thankyou very much for this information. I will have to pass that along to our head dude and see if he has a solution for me.

Thanks again for the info.

 

I have a 96 with the 5 pin connectors.
The center wire is the common.
The outer 2 are the glow plugs.
The 2 next to the center are the injectors.

 

Thanks for the info.