When I am hooked up to electric my positive battery cable gets so hot that it actually melts the fusible link. I have two golf cart batteries with the link between the two. This is driving me crazy having to charge the batteries every time I use the power lift. If I take out the link it actually gets so hot that it melts the insulation off the wires. Wired wrong? Incorrect wire guage? Or could it be my batteries arent good anymore and the power supply is trying too hard to charge? Any insight would be appreciated.