I found some cheap iridescent small turn signals where the wires are both black. So when hooking them up it doesnt matter which way there hooked up they work regardless of what wire is touching the green. As long as the other wire is connected to the opposite wire. They flash correctly with there respective rears as well. Everything works fine but I was brought up that theres a positive and a negative. I dont have the turn signal indicator light hooked up right now but I didnt think that would make a difference! Am I missing something?