Underhood Wiring problems of the 1996 Chevrolet Silverado

While driving she was experiencing hesitation, hit pothole and had to be towed home. Upon inspection of the vehicle, the factory wiring inside the fuel tank to the fuel pump was burned up at the connector, only bear wiring was present in the fuel tank. Fearful this may catch fire. Hardwired this feature per owner who is also mechanic. Appeared to be faulty wiring, definitely 4 pin connector at the top of that wire assembly. No other problems.