i have a 88 si, my question is could i get like a 89-91 si harness and just cut all the plugs and put the ones from my 88 onto there? i heard the only things that are different is the plugs so if i just cut the plugs off later harnesses and resoder the plugs i have from my harness would it work?i hate havin a 88, so hard to find a 88 harness areound here

any information would be useful

 

you could pin a 89-91 into the square 88 plug near injector resistor but you will have 2 extra wires and more than likely throw codes. . . .