Welcome to the forum...
Are you looking for a new charger? You can use several different chargers and buy them with the plug you need for the cart. If your looking for a used charger you'll need to either find one with a Melex plug or wire the plug yourself. Also a 220v dryer plug will fit your Melex so you can wire that to the DC cord on the charger and it will plug into the cart with no problem.
Just about any 36 volt golf cart charger will work except a newer club car charger.
Try posting a ad in the wanted forum here if your looking for a used charger.