On my 61 GMC with a Hydromatic (4spd auto) is there a nutral safety switch to make sure you can't start in gear? I don't have a schematic yet but I thought there might be one. The the truck has been sitting for at least 15 years and now that I,m ready to get it running it won't turn over. There dosen't seem to be a load on the electrical system, like the starter is under load. But before I start meassuring voltages and see whats going on I thought I would ask.
