Still working on putting my 74 Grabber back together. I'm trying to figure out the glove box light, I believe the light fits in the back of the switch but I don't have a light there. I can't figure out what bulb it would be nor do I really know how the switch works. I've got two wires, one is hot and I believe the other ground but I can't figure out where the ground would hook. See Picture. can anyone tell me how to can anyone tell me how to put this back together and what bulb it takes?