I'm swapping a 94 C1500 right now and was wondering if everyone was removing all of the stock engine harness or not. If not, did you just cut it back to the firewall connector? I'm trying to minimize the stray wires underhood if I can. I've cut the LS harness back to a stand alone, so I assume I can just tie into the stock FP relay and i'd like to tie into the stock check engine light too if I can. Keeping the stock AC plug, water temp, oil pressure, and alternator (If I need to to keep charge light off).

Tips? Tricks? Thanks!