I may have stumbled across a new 5.3L to replace the one I got screwed out of last time (long story). Anyways, if I wind up buying it, I want to modify the factory wiring harness to eliminate the factory fuse block to make the install a bit cleaner.

On that note, how many of the fuses are actually used by the PCM / engine? I know a whole bunch of them are used by other things like the horn, headlights etc. How many of the relays are used by the PCM / engine?

Keep in mind that my truck will be equipped with a standard transmission, so anything that might be been fused for the automatic can be eliminated

Thanks!