Designed for a 2006-2018 Mercedes Benz Sprinter.

Replaces the cigarette lighter on the cup holder with a round 12v usb charger. The one used here has a diameter of 29mm.

To replace the original one, you can shim a very thin metal between the holder and the adapter to push on the tab on the back and just slide it out. This is very difficult so I suggest just removing the entire cup holder instead and pull down on the tab from the back to release it.

There is 3 wires on the back of the original one: A positive and negative for the cigarette lighter and a positive for the led light to the side.  I just omitted the led light wire and made an adapter using 2 wires with a crimp connector and a flat blade crimp connector.

I printed it in ASA. But it can be printed in PETG, ABS, or PC. I do not suggest printing this in PLA since it will warp in a hot vehicle.