So I keep reading on the forum about not being able to use a 1g wiring harness and the Ecu's are different. But nobody gives a clear reason why. I understand some pins are different between the gvr4 and 1g Ecu's. I know that the wiring might be slightly different in location and in length.
But what makes the 1g harness not work. Using a 1g ecu would eliminate the problem with the pin location, and the wire length could be fixed rather easy.
So, is there anything that makes this not worth the time.
Heres the reason I want to use the 1g harness....Brand new....
It would be easiest for me to use this harness rather than try to source a vr4 harness. So I need some help here.