I have a 1973 F100, automatic transmission with a 360 engine. I went to start my truck the other day and it sounded like my battery went dead. I tried start it again and nothing , no click, nothing. I just bought a new battery for it about 3 weeks ago and I checked it and it seems fine. I even replaced it with another battery and nothing. I knew the starter was old because it was in the truck when I bought it and so I replaced it. The brushes were all but gone. So, I replaced it and a new starter solenoid. I tried starting it and nothing. I'm wondering if my voltage regulator got fried?