I have a 96 Ranger with a 2.3 liter engine and a massive short in the fuel pump circuit. The fuel pump relay seems to check out ok and I've replaced the fuel pump and it still persists. Even with the fuel pump disconnected it still blows the 30 amp fuse shortly after I turn on the ignition. I've tried tracing the wiring back but I don't have a wiring diagram. Any help will be greatly appriciated.