I'd like to hardwire my Garmin GPS by using the fuse box under the steering column. I plan on using one of those add-a-circuit adapters and hooking a 12v socket up to it to plug the GPS into. What I'm not sure about, is which spot in the box I should use. Should I use one of the empty ones, and if do which one? I'm not familiar with the wiring of the Element do if somebody could simply tell r the best spot to use I would be eternally grateful.