have a 91 80q and have a mc2 swap going. the mechanical end is easy. I have the red harness from the 200t(mc2) and the fuse/relay tray, and the ecu. do I just pull the old harness out and put the new one in? I did notice that the little red wire for the starter isn't in the mc2 red harness. also, is there anything I need to slice in? if you could give me some direction, that would be great. thanks.

do I have to take out the dash to get the wires to the ecu by the glove box?

 

ok, let me narrow my questions. first I am unsure of exactly what year this is out of. I have a bently but I know there are slight variations between years.

my main questions are these:

there is a large red connector and a large white connector on the inside side of the harness. it also has the ecu connector and vacuum line. it also has a few smaller ones. my question is where do these go. where do I plug them in inside the car.

next: where do I mount the ecu?

next: included is another fuse/relay tray. do I just unplug everything from the back of my old one and plug in the one from the mc2?

thanks.

 

with so many of these swaps, suprised no one has chimed in.

 

dude, car is too old for any of use to remember how to do, well most of us. I was 4 years old when your car rolled of the assembly line.

Basically download any thing that can help, go to Emule and search for all PDF on the subject "audi" also any documents and sometimes zips.

 

pictures would definetly help