is it possible to use to the 90 integra obd0 engine wire harness in 91 crx si with a b18a1?

 

No. They are wired completely different.

 

Your Si harness will plug right onto the b18a with zero modifications. As long as you stay obd 0.

 

i would love to the original harness if it was complete. but its not so im forced to swap it.

 

i figured that when i popped my hood and notcied that the teggy harness has a small green clip where the main clip plugs in and after that didnt attempt to disconnect anything.

 

I can make you a new harness or repair yours if you need it done lmk

 

okay. also i have a crx std harness can i convert to be used in an si? ive looked around and no one really mentions if it can be used or not. only the dx to si in a dx is talked about not dx to si in an si.

 

you cant run a DX harness in an SI because the firewall plugs are different form both models. best bet would be to find a 90-91 civic mpfi engine harness.

what is wrong with your engine harness that it needs to be replaced?

 

thats what ifigured. clips are cut.

 

It can be done if you know what your doing.