I have a 1993, F-150 with a 351, AT, 4 wheel drive. My problem is, when you turn the key on it "clicks" and everything goes dead. I can move the positive cable on he battery and get power back. Tuen the key same thing. I have cleaned the battery cables both ends, removed and tested the starter, checked fuses and pound my head on the fender. Could it be the starter relay on the fender?
It did have a cheap remote start on it that I have removed.