alright so heres the deal, i picked up an s4 turbo motor for my 10ae and it has the main ecu wiring harness, but the shell i have doesnt have the other 2 harness', the small left side one, and the massive dash one. and i have an 86 gxl with all the wiring still, and im wondering if i can use the wiring from the gxl into my 10ae. again, not the main one that clips into the ecu. sry to sound so stupid i jus have never dealt with wiring harness' b4, and im not really 100% positive what each one does. thank u for all the help and clarity on this situation

 

basically anyone who has put a tII motor into an n/a rx7, did u have to change out all the wiring harness or jus the main ecu one?

 

i think the dash one is different by like 4-5 pins, something really minor