The extra 12v was installed on the driver side. There is a nice open area just besides the large battery tray that holds the 6v bank, right behind where the charger connects. The LEDs are just too bright for close quarter use. I decided that I really liked the way the fitted kind look and I needed a proven option. I ordered a kit from RecPro off Amazon. Fronts are halogen and rears are LED. Only had time to run the harness and install the fronts. Will get to install the back sometime this summer or if it becomes an issue that I have no rear lights.
Install was pretty straight forward. Using a paper template, mark your cutouts. Step back to measure and take a look. I should have done a little better job as the RH one is more towards the center, but it works.
First I drilled holes in the corners for relief. Then used a dremel and a 4.5" grinder with a cutting wheel. Use a mask, safety glasses, long sleeves and pants, and a respirator/towel to manage the fiberglass shards and dust. Hold your nuts and start cutting, once you commit, no turning back!
The light bezels had decent overlap but I had to keep checking the fit. Once where I wanted them mark then I marked where to drill the screws. Drill, then attach with provided screws.
Overall the install was relatively easy. The kit came with a prewired harness and a pullout switch. I ran all of it to its home and installed the switch then connected the fronts and tada.