All is powered off a deep cycle 12 volt battery I got cheap at Costco.
The battery lasted almost the entire 3 night camping trip, pretty impressive considering we ran the speaker all day long, and the lights burned into the wee hours.
Step 1: Run taught support wire between trees
Step 2: Wire it up
So the run was battery>Jumper cables>Lumex>copper wire & steel support
I also wrapped one of the jumper cable ends in electrical tape to prevent shorting (I have yet to install all this into a box with a fused distribution block)