Car wiring diagrams: Ford Key Circuit Board, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. HERE I HAVE AGENUINEFORD REMOTE KEY CIRCUIT BOARD THREE BUTTON. Press any button on Remote until a sound is made. ALSO THE TRANSPONDER .Find great deals on eBay for Key Circuit Board in Car Remote Locking Controls and Fobs. Shop with confidence..Unfortunately, the new case wouldn't close with the circuit board and battery. The key shell is almost identical to another ford key shell that I have..