07 Precedent drives forward but no reverse

[Musthang]

I have a 2007 Club Car that won’t move in reverse. There isn’t even a back up alarm that goes off. The cart has 4 12v batteries 1 being less than a month old and the others less than a year old.
I’ve replaced the solenoid thinking it was possibly bad and that didn’t fix the problem.
I’ve also pulled the F/R switch and swapped my wires and when in reverse it went forward so I’m assuming my switch is good.

This thing is very inconsistent when trouble shooting. At times in the forward position the solenoid will click but the cart won’t move. Also if left in reverse with key on the motor gets extremely hot to the touch.
When I replaced the solenoid I was trying to test it and I had both the main red wire and the main yellow wire completely disconnected from the solenoid and just the small blue wire and small blue/white wire connected and the cart still moved forward when pressing the gas pedal.

I’m at a loss, can someone point me in the correct direction?

Thanks,
Jimmy