STARTER ON BMW K1200LT WHIRS BUT ENGINE WONT TURN OVER

The aux input requires a preamp'd input. I connected mine through the CD changer with an adapter from DICE DUO. It even allows you to toggle through your selections using the handlebar controls, and scrolls the titles across the radio LCD screen. Google it to find them for sale. Before that, I just got a cassette adaptor and played it through the cassette player. There is a lot of information on the K1200LT riders forum also. Google that too.

You have either a starter relay or the solenoid is stuck. Since I don't know what make the starter is, that's about all I can tell you. Try putiing the bike in high gear and rolling it back and forth and turn the engine just a bit. Sometimes that "unsticks" a starter drive gear. Might work. Good Luck!