I've went a different route with the engine on my 2dr Tahoe/ Esky swap. I'm running a 5.3 out of an 03 Yukon and mating it to the 4l60 4wd from my 00 escalade. I have the ecm and my harness is an aftermarket stand alone. My question is; how can I tie in my 4wd wiring to the new stand alone? I'm kinda stumped and need a little push because I took the training wheels off too quick