I need to find the negative wire for the fuel injectors so i can hook it up to my meth kit
Looked all through the service manual.. soooo confusing.. a good place to tie into it also if yea know one..If you can help id appreceiate it

 

Are you looking for IPW for the controller? Injector 1 ( - ) is pin 27 on the C3 connector on the ECU. It's a grey wire with a black stripe. Just be careful your controller is using an isolated input as it can become a ground path for the injector and cause you problems.

 

its going to go to the wire that pulses the pump for the meth.. do you beleave this will be a problem?

 

Do the instructions say to wire it into the negative side of the injector? If it does, chances are really good it is isolated. Which model are you going with?

 

k cool ill prob do it next week then when i get back from my drive up to WV. I got it from STS its for a LS1 back when I first got the kit (thay didnt have a kit for ours) so I haveto chang up the wireing but thay say it will work

the instructions in the manual say
23. Route the Black injector lead along the fuel rail and to one of the fuel injectors. Insert the provided T-Tap connector onto the negative side of the injector wire harness. Connect the Black injector wire to the T-Tap connector on the trigger wire on the fuel injector. (Note: The trigger wire is the negative (-) or PCM grounding side of the fuel injector and NOT the 12 volt supply wire going to the injector)