Installed backup lights and don't know what's wrong. I used a SPDT setup, and I hooked everything up right. When the truck X into reverse, I hear the relay "click" like it's supposed to. But the aux lights don't come on and both bulbs were just replaced. I popped the hood this morning and noticed one of the butt connectors on the power wire to them had come off. I don't know when this happened, So that's why I'm asking.