I was thinking about picking up a set of these. Looks like Pep Boys/O Rilley/Auto Zone all have about the same ones for around the same prices. Was just curious as to how I need to install these so they come on but not my overheads? Im thinking fuse box, but not exactly sure where. And if I wanted 2 in the back where would they plug into? Would be on a 10 FX4.