I have an s5, i want to use s4 electronics and ECU on the motor.

My car was a s5 base, swapped in a tii motor, and i want to use the s4 electronics.

Can i do so with just the s4 tii engine wiring harness?

I know the interior plugs won't plug up, but is it possible to just splice the wires together to make it work?

 

you could go for an s4 wiring harness and s4 ecu as far as i know, but i'm unsure weather you'd need to get an s4 tranny. you should look for some wiring diagrams from the FSM manuals located in some links on this site and i thin it shoudl be pretty easy for ya to figure out.

Matt

 

farg, the tranny doesn't matter in the slighest.

I know i can use the s4 engine wiring harness, but is there a way i can make it hook up to the s5 interior harnesses and still work?