I use this https://www.amazon.com/gp/product/B0754NDNT8/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1&tag=tmc064-20 attached to the tiny triangle window on the driver's door. I tapped into 12v inside the door. I could not be more please, charges both android and IOS, easy to see the display...