Hello, I am in the middle of an engine swap. I have a 1994 gmc k1500 I bought it without a motor. Put the new motor in which is a 350 tbi (same as last motor) from a 1990 k2500. The part that I am stuck on is the wiring harness is not the same, what needs to change on that 1990 350 tbi to accommodate for my 1994 wiring harness?
