Hey guys, I am new to this forum so PLEASE keep the flames off my butt lol... I have a 1993 Silverado Ext Cab that I am having a new Vortec-head 355 built for. The question that I have pertains to the Holley Commander system that I recently attained i a deal. Aside from my lighting and horn wires, what wiring can I actually eliminate. The ECM is already out of the truck along with the main harness coming off the firewall behind the fuse panel. The goal is to only have the wires required to run the truck coming througgt the firewall. Thanks in advance, Martin