Installation is pretty easy even if you have push button door switches. In my car there are no ceiling lamps and ceiling lamps on the doors. Connect the ground wire to the door switch ground wire and the power wire to 12V DC. A pain in the ass when you want to protect and mask the controller. I removed the door panels and the wiring harness between the door and the body to route the wires into the car. If you have door lights you don't need to follow all the steps I did. Make sure the surface to be bonded is very clean and free of any cleaning product residue. Otherwise they won't stay in place. As a professional mechanic, I recommend professional installation if you want them to last.
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