Ford F150 Wiring Diagram | Free Wiring Diagram Variety of ford f150 wiring diagram. A wiring diagram is a streamlined conventional pictorial depiction of an electric circuit. It shows the components of the circuit as simplified forms, and also the power and also signal links between the tools. 2007 F150: driver door dome lightyenger door I am having an issue with my 2007 F150 XLT. Recently, when i open my driver door, I am not getting any dome light, no "ding" sound from the ignition if the keys are in it, and consequently when I shut the vehicle off, the radio stays on when i open the door--even thought the accessory delay relay is supposed to shut the radio off when the driver exits the vehicle.