ive a 00 civic DX 2dr hatchback. It blew on me a while ago after I rebuilt it and has just been sitting here. A buddy of mine has a k20 he will sell to me for pretty cheap. However I cannot find a Kswap harness that will work for the civic I have. Is it possible to just get a the kswap 99-00 civic harness and just plug and play with it and hope it works. I believe some of the electrical and sensors will not match correctly though for the k series. Ive asked a few other people and am unsure.

 

You must use a '02-04 RSX manual harness (or aftermarket equivalent) AND a conversion harness for a '99-00 Civic, and you will still have to do a little bit of wiring, but it is mostly plug-n-play.