My buddie just bought a 1987 honda crx and he wants to put a b18 out of a 1991 integra into it, i was wondering if you need to change the whole harness in the car or if you can use the stock one. Any knowlege is apreciated.

 

yes you will need to not only swap the wiring harness but the ecu as well. also motor mounts are required. i also own an 87 crx and am looking into doing the same swap. i have never done a swap in a honda this old but have built multiple 10 second hondas and any info you could supply while doing your own swap would be appreciated