[Duramax40]

Very nice work I like the attention to detail. I had a question on the underwood factory wiring. I have an 89 big block truck that I converted to an lq9 and I'm starting to dissect the TBI harness out. My LS harnes is already done. What wires did you end up keeping. So far Iv found the 12v and couple sensor wires but everything else is confusing with out a year specific schematic book. It doesn't look like you had to keep that many to make it work. Great build!!! Thanks for any in site