My f-150 4x4 302FI 4 spd w/ac will not stay running. It will run great for 30-40 minutes then die. Mechanic has found 2 new fuel tank pumps, new fuel lines , new electric pump and injectors by previous owner. He also has found that the engine bay wiring harness has been messed with, some splices , some terminated wires (tank switch) etc. I am thinking that maybe I should just try to find an entire used harness as it also has all the wiring to the tanks and pumps. Anyone have an idea of where to find this harness or have one they can part with?