Hi Folks: I recently purchased 29 Ford Coupe hot rod with 350 Chevy crate engine dual electric fans and 700R4 automatic transmission. It was built by one of my friends' father who unfortunately passed away and who built several of these over the years so it is built pretty well (my friend, however, has no interest in or knowledge of cars). It was built in 2010 and has about 4900 miles on it now, I put about 100 miles on it so far (had it about a week) with no issues. The way he wired it is, first turn on battery cut off switch, which turns on fans and electric fuel pump, then turn on ignition and then press starter and off you go. Well, today I wanted to take it for a spin (was sitting only couple of days), turned the battery cut off switch and nada - no fans came on/no electric pump nothing, obviously the ignition and starter did nothing either. There was a blown fuse for one of the electric fans, which I changed, but that did nothing. Thinking battery was dead, I tried to jump start it. While I had my daily running and battery connected to the Ford's battery, I was able to turn the battery cutoff switch on and fans and electric pump came on. When I turned the ignition, all the lights and gauges worked, but pressing the starter did nothing. It would spin once, but it would not start (not enough juice). I tried couple of times and nothing. Then I checked the battery itself, and to my surprise, it was fully charged, so no battery issue. I checked all the connections at the battery and cutoff switch, all good too. I ended up removing the battery cutoff switch, and one of the prongs was kind of loose so I am hoping it is bad switch that needs replacing. I was surprised that when I tried to jump start it, everything came on with exception of actual starting the car. I though if the switch was bad, the extra boost would not help anything (but I am no electrician). I checked all the connections and did not find any loose/disconnected wires. Could it be as simple as bad cut off switch or am I missing something? What else should I check? Any help/input would be appreciated....thank you.