I’ll be willing to let it go at that, but sometimes the “wire” connection for the ground path isn’t a “wire”; it’s just the way the metal housing connects to the frame or body panel.
Point is, you need an energy path for the light, and a return for the other side of the battery.
Okay. I’ll add that.
We can’t get it inspected and licensed until we get the lights working, and I know my uncle would like to get it off his insurance, although it’s probably not costing him much since it was sitting in his barn not being driven.