$ 0 0 Circuit Dagram _ Opel Car 300 NT - Opel Car 300 - Opel Car 2003 AUTORADIOBlaupunkt Opel car radio _ Main board & Keyboard SchematicsKEY BOARD SCHEMATICSThere are three types of keyboards for these sets.MAIN BOARD SCHEMATICCLICK ON THE SCHEMATICS TO MAGNIFY