'03 electric club car wont go

[03 electric]

The car was running fine one minute, I stopped for a minute, and when I got back on...... nothing, I could hear the "click" of the motor when you first hit the gas, but that was it... there was no go. So I took a look underneath at the motor and the heavy white wire had melted/broken. I repaired that but still no go, I noticed that something smelled hot, and started feeling around the undercarriage for something warm. I couldn't really see what it was (kinda cramped under there) but it was pretty hot and it was on the driver side just in front and above the motor. We really use this thing a lot, so I hope it can be repaired rather easily. Any ideas would be appreciated.