i am getting everything rounded up to complete the n/a / t2 swap. <y question is what wire harness do i need- the one from the pass side that connect to the engine- or the other side- or both. Any info will be a help especiall where to get all the little stuff as well.

 

depends on what year the car is and what year the engine is, if its s5 - s5 then you use the one from the ecu to the motor as the engine wiring is different but the body is the same

 

if its an s4-s4
you need the passenger turbo II harness,
and you can use the na driver side harness but...( you will have to run 3 wires from engine bay to inside the car near ecu, 1 for temp gauge, and 2 for alternator, which is pretty easy really search for writeups on it)

 

thanks thats what i needed

 

make sure you splice into the right wires for the ALT!! lol i did it wrong, and then my car wouldnt turn off!!! lol