Join Date: Jul 2016
Location: Seattle, WA, USA
I ride an '08 K 12 S myself for about 5 years now. My lights go out pretty quick on turn-off. But then I have a Bare Bones version (no servo assist brakes, no ride control, nothing) If you bought a bike with full elec. package, you have as much wiring as a new Beemer car. you might have to spend the bucks to have a dealer go thru it. A friend recently bought a low miles but older K 12 R and he spent a few hundred bucks to have a dealer straighten out a few elec. issues he never would have figured out.
Are you showing any lighting related messages on your dash panel? You will get yellow or red warning triangles illuminating and a written explanation on the LCD.
For my add-on stuff I finally acquired enough if them that it was better to have an "Elec, Hub". They are a snap to install and it redirects all the none factory elec. components away from the CAN Bus.