So as I said before just hooked up two battery tender connectors. One is under the bike for the actual tender. The other runs up under the passenger seat. The 12v outlet is not plugged in all the time. I keep the cigarette lighter adapter under the passenger seat strap for storage.
View attachment 1679
When I want to connect something like GPS, heated gear, or phone charger, I just run the outlet out from under the passenger seat. Pretty simple and no permanent modifications needed.
View attachment 1680. With the GPS cord I just run the cord from where I have it on the tank down the side of the tank, shove it in the crack under the seat and around back behind me. Plug it in and good to go. If I need to plug in my phone while riding just plug it in inside my pocket and run it the same way. Just don't forget to unplug it before getting off the bike.