are you talking about the engine harness or the transmission harness? if it's the engine harness, just use the s14 engine harness and ecu.. i think its 93% plug and play from there.angrypenguin182 wrote:then it should be fine, im like 85% sure. Your lucky im gonna have to splice my harness look at both FSM's and like triple check each wire to make sure i wire the harness right haha