i have a 00 civic ex and im putting a 96+ GSR motor in, i know my wiring harness should just plug in but it dosent, the plugs on the ecu are off, but i have a 96 civic wiring harness that does plug in and the 96 harness is def and obd2 and i thouht my stock one was obd2 as well, is it possible that there are 2 different kinds of wiring harneses for a 2000 civic ex? what should i do?