OK, I accidently posted this in the TPI section and luckily was told that I was in the wrong section so maybe I could get some help here. Just a quick question... I am swapping from TPI to carb, if I take the TPI wiring harness from my vehicle, will it affect anything on my vehicle such as lights, lighting or anything else? I know I have to wire one of the fans. I guess I want to know if the TPI harness is tied into anything else. I plan on getting rid of my tpi system for a carb. Thanks, I will continue to search the forums and read the stickys.

You can remove most of it. The lights are a separate harness. All you need to keep is the wiring for the temp sensor and the oil pressure sensor so your gauges still work. You'll need to wire up something for the radiator fan and the fuel pump and power to the distributor(and carb if its an electric choke). Alternator and A/C wiring may also be part of that harness, I'm not sure.

For some strange reason, the windshield wiper wiring is also part of the engine harness. Why, I dunno. At any rate, I'm going from TPI to carb in my 88 GTA as we speak. I lucked out and found an 88 Firebird parts car with a 305 TBI that has a good engine harness that I will be putting in the car, there will be less EFI stuff to cut out, I can put my speed sensor buffer box back in easily (car was switched to 91-92 TPI which doesn't use a buffer box), and I can save the TPI harness which is worth some $$$. The alternator and A/C wiring is part of the engine harness. I would suggest doing what I am doing, so you can save your TPI harness, unless you don't care about it.

thanks guys for the help