Hard wiring the GPS V

Before setting off on my big ride to the ST-N National meet, and to avoid having to buy 4 AAs every other day, I'll hard wire my Garmin GPS V straight to the battery. I have a cable with the Garmin plug at one end (I'll find a rubber cap to, er, cap it when not in use), an inline 2A fuse and the connectors to go on the battery post of my 6th gen Viffer. Nice little package from 2wheelinnovations.
My plan is basically pop up the gas tank, remove the plastic part that covers the battery and then find a logical place to run that wire -- I'm trying not to remove the fairing, which has a small crack at the back bolt because of bad torquing (or placement just before that) from the previous owners.
Any hints, tips from those who have done this to their bike?

I've got a 2 wire plug that the wires run next to the frame under the tank on the left side. I used the sae flat plug that is the same as my battery tender. The cable is plugged in under the seat where it can be swapped for the battery tender. That plug runs to the battery. I bought a spare Garmin power cable from GPScity.com and cut of the ends and hooked a sae plug to it. I don't leave my gps on the bike when I'm away from it. I use the RAM quick attach mount and remove the unit and arm and store it in the Givi bag.

That's where I routed my wire: inside edge of the frame, under the tank's edge, following two other lines. I'm just a little concerned about the heat from the rear head... Rightly so?

I picked up a cigarette lighter receptical from Radio Shack. I plan on mounting somewhere up front, it comes with a in line fuse. The Garmin I have comes with a cigarette lighter plug on the end.