I have a 1992 Camaro RS that I swapped out the 305 TBI engine for a 1991 350 TPI engine. I have all the engine wiring for the TPI engine plus the 730 ECM. I did the swap and got the engine to run fine, no SES lights or codes. I did the wiring for the speedometer too and got that working. But I now have no heat or A/C. The blower motor doesn't come on at all. The blower worked before the swap. Has anyone run into this problem. Is there a difference in the bulkhead connector pinouts for a 1992 TBI car and a 1991 TPI car. All I did was use the 1991 engine harness and plug it into the 1992 bulkhead.

 

I lost my Blower motor when I installed an AC delete box, it was because the resister shorted on the blower case and blew the fuse, did you check that?