Arrgh! I just blew my inverter by hooking it up in reverse.
I am going to take it apart because the manual says it has internal fuses. Hopefully that's all that's wrong.
I'm going back to the 3-6 volt trojans for now.
It looks like I'm headed for a very good tank. I found some info while searching for 16V batteries that racers run higher voltage to get a hotter spark for higher HP.
Mpguino is still not working. Must be a bad solder.