[Jacksonlll]

I know you checked the batt connections, but you better do a good job of it. Every connection. It can show good voltage with no load, but it can't pass the high current through. Also look at the connection of the batt cable to the terminal that fastens to the batt posts. If that crimp is rusty or loose, it can drive you crazy. You must have a good, tight crimp around the cable wires. I had to drive a nail in one to get good contact.