I got a problem with 7.3 not starting, plenty of fuel in tanks, put on new fuel pump, new filter, had injector pump rebuilt bleed line up to IP still no fuel to injector. Hard wire to IP fuel cut off solinoid and started getting fuel to injectors. Replace lines on injectors and truck cranked right up. Un hook wire from battery to fuel cut off still running fine however after switching it off truck will not start unless I put wire from battery to fuel cut off back on. Turn cranking switch on got voltage to IP turn switch to crank voltage to IP drops to nothing. Im thinking cranking switch needs replacing. Anyone got any suggestions? Thanks