Can't ground my lights! Help
I bought some general amber lights from the store. They have a wire for power and "self ground" by running a plate to the screw whole so when the screw touchs it, it grounds the circuit. Well I screwed them in and just wired them into all my other running lights. However they aren't working and Its the ground. I tested the wires with a test light and the wires have power. However when I put the test needle up to the screws the light lit up. Indicating the screw running through the two wholes for mounts are hot. And they are screwed into metal. The screws shouldnt be hot though because thats the ground right? The rest of my running lights are working and I know each light is receiving power. Even when I unscrewed them and put a screw driver against the metal plate on the back that grounds it, it still didnt light up. Any help would be appreciated. Im no electrician.