@bobfromclevelan ,Bob, Since you know batteries are good ancharged, check all the electrical connection/plugs/wires for damage/loose/corrossion if all good probably a bad solenoid. Link for diagnosing/test procedures below. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://axleaddict.com/auto-repair/How-to-check-your-Golf-Cart-for-a-Bad-Solenoid