Ditto on the light power from the headlight switch. The panel where the light switch is is about 6" x 6" and should just pop out. Does your '04. 5 have that small trash bag hook? If so, remove the phillips screw that holds it on, then pop the dash section around the radio out so you can access the cigarette lighter circuit for power. Compared to my old '95 Ford, these dash pieces are like Lego! Hope this helps