My 85 C-10 was running fine, after switching a 1990 engine tranny and electrical harness into it, went out couple hours later, truck won't start. It cranks over, but the fuel pump isn't running, and the headlights, interior lights, and horn are also inop. Everything else works, including power windows and locks. No fuses are blown, can't find any shorts. Any help would be GREATLY appreciated.
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