I hav an 88 witch i tried to convert to mass air. I changed the computer and full wiring harness out of an 89 and now my fuel pump relay and pump are not getting power. Is there a way i can still use the wiring harness from the 89 without having to change it back to the original 88 harness.

 

they sell mass air conversion kits on 50resto.com that i believe will work with your 88 harness so i dont think there is any other way for you other than putting the 88 harness back in and buying the conversion kit for 50 bucks