Updated the switches with a plug:
Switch installed. Ignore all the wires; they are just dangling waiting to be reinstalled. Plus, I'm rewiring them with some better wire.
Test run of the headunit I picked up yesterday. It has a blown amp but everything else still works fine. I don't plan on keeping it, though. The buttons light up green (my least favorite lighting color, and I don't want to spend the money on getting an Aux jack. Plus, only my front speaker are amplified right now so I don't have any sound in the back.