I am going to rework the harness on my 6.0l this weekend. Harness/ PCm are out of a 2000 Yukon XL. What I want to know is if these warning light wires from the PCM for Low oil, Low coolant and so on are just a 12v power switch. Can I use all of these senors and build like an L.E.D panel that will light up to give warning? I have an ls1 camaro and those warning lights have saved my ass a few times. My goal is to make my truck just as functional as a bran new truck. I would buy a new truck but I do not want a loan, I pay cash for everything Plus I like my suburban more
so I'm not really looking to make a 4 wire stand alone system I want to integrate this drive train into my truck like it was supposed to be there factory. Also how do I wire the A/C in the truck. Do I just wire the 6.0 compressor to the factory wiring or do you control it through the PCM?