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.

also,
was wondering what I can do to the ecu? I know its cis and I can put a diff. spring in the wastegate. what can I do to the ecu to componsate for this?

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.