This was pretty easy. The only place to safely route powerup to the tent is through the forward most panel under the mattress in the GFC tent. Conveniently (not really, planned on this), my ac/dc panel is right under where it needs to go.
The way I did it does sacrifice 3.5 x 5.25 " of sleeping space. If you sleep two, you can probably skip the single gang conduit box I used, but it'll just be me up there, so I'd rather have things more protected.
