Classic Mini & Cooper Wiring Diagrams On-Line Wiring Diagrams for Various and Assorted Mini & Mini Cooper. These diagrams are high-resolution PDF documents. You will be able to zoom in to view detail, and print legible copies on your printer. 2006 Mini Cooper S Headunit Audio Radio Wiring Install Jul 20, 2015Here is the audio stereo radio wiring information for your 2006 Mini Cooper S Convertible with the standard not the Harmon Kardon amplified system. It will be useful when installing a stereo sound system, aftermarket headunit radio, or other automotive accessories.