Car wiring diagrams: Ford Focus Stereo Wiring Wiring Diagram, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Use our Ford Focus Stereo wiring diagram to install a new or used car radio the easy way with wiring schematics for your MP player or .Ford Focus SE with sync and speakers. These are the colors of the wires from the . I ve looked everywhere but I can t find the wiring diagram to connect . Aux power for amp turn on v . Front speaker R and L for low to .