I recently installed LED lights in the bed of my truck and they are incredible, I want to install the same type of lights around the cab of my truck to make it brighter at night when I open the door and such. My truck is only an STX so it has just the one dome light in the cab that does virtually nothing. What can I tap into so that the lights I install will come on like the dome light does?

 

This might help. It's what I followed to install my under-door puddle lights

Copied from this link https://www.f150forum.com/f38/led-do...amples-193953/





Tapped into the door sill wiring so these come on as puddle lights