That said the peg chargers are smart enough to shut off when the battery is charged and shouldn't over charge it.
Some people have said their newer 24v pegs have had 2 x 12v batteries where as the older ones were a single 24v. Can you get a photo of the battery for us? If its two batts you should see it from one of the sides. If its solid all the way around then its a single battery.
24 v connectors are hard to come by. You can post a want add in the buy and sell section. If you can buy just a connector then NSAellis would be the one to ask about it.
You can wire a remote charge plug if you want to but you will void your warranty if you cut into the factory wiring. Also if you don't use a relay to kill power to it the kids could drive off with it hooked up and destroy your charger.