What harness will I need?

I have a LS that was suppose to go into my integra, and I'm just really tired of my a6 burning oil, so will my stock harness just plug right in? My car is an 89 Si. I know for a b16 swap you need a jumper harness, but thats just for vtec, right?

is your ls motor obd0 or obd1? because your civic is obd0. and depending on which b16 engine you have it is obd0 also.

ya if it is a B18a1 LS motor, then it will plug and play(for the most part). If it is a B18b1 LS motor I think you will have to change obd0 to obd1

no no no, it can still be a b18a motor and still be od1, 90-93 teg motors are b18a, 90-91 obd 0, 92-93 obd1

so if you got a obd0 b18a then yoru harness will plug right up to it