Car wiring diagrams: Bmw Ground Wire, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. BMW motorcycle electric starter trouble shooting hints . by Duane Ausherman This page is about the BMW motorcycle models R , R , R , R , R , R .Denali Marker Bulb Plug and Play Trigger Wire Adapter fits some BMW, Ducati, Triumph and other motorcycles .GROM DSP .Connect RED wire to a Volt switched power wire. Should turn on and off with the key ignition or accessory . Red POSI TAP connector has.