I have installed aftermarket running boards and found a single led 12volt light that I want to install in the rocker panel. I opened up the door sill cover and found the large run of wires and wondered if anyone knew which wires to hook up to the dome light circuit so the new lights will come on with the dome light. 2008 F150 Supercrew Thanks

 

The wire that controls the dome lights is black w/ blue stripe.