Hey there Pappa-P,
I have a 2013 Limited. I installed the same heated grips you mention, Slipstream Heated hand grips from H-D. There is a 2-conductor plug (black and red wires) at the bottom of handlebars close to where they exit the handlebars. You must unplug it there. BE SURE to tie a string to the plug, so you don't lose it when you fish the wire out the top. I also am assuming you can still grab the plug through the handlebars at top. If you can't grab it, then pull the wire out the bottom. Replace the wire through the top end of handlebar using "Bailing wire" or stiff, yet flexible wire. Agan, be sure to tie a string to end tail-end of the wire, so if you go too far, you can easily pull the plug out. I wrestled with that myself. There is absolutely no slack to pull the grip off unless you unplug the bottom wire.
I have a 2013 Limited. I installed the same heated grips you mention, Slipstream Heated hand grips from H-D. There is a 2-conductor plug (black and red wires) at the bottom of handlebars close to where they exit the handlebars. You must unplug it there. BE SURE to tie a string to the plug, so you don't lose it when you fish the wire out the top. I also am assuming you can still grab the plug through the handlebars at top. If you can't grab it, then pull the wire out the bottom. Replace the wire through the top end of handlebar using "Bailing wire" or stiff, yet flexible wire. Agan, be sure to tie a string to end tail-end of the wire, so if you go too far, you can easily pull the plug out. I wrestled with that myself. There is absolutely no slack to pull the grip off unless you unplug the bottom wire.