K75RT parking light

[Brulaap]

Hello everybody, the small light in the headlamp, I assume that it is intended as a parking light, randomly switches itself on when the bike is parked. This of course might drain the battery. Switching the bike on and off with the ignition key makes it turn off, as I checked when I parked it couple of days ago, just now I looked at the bike, and it was on again.

Not long ago I cleaned various switches, but not the dashboard inside stuff, like the lock. Could the problem come from the dash and could opening and cleaning it solve the problem?

[Laitch]

Clean the ignition switch. Click on the link below.

[rbm]

+1 for what Laitch says.  When the ignition key is in the "park" position, power to the parking light comes directly from the battery.  When it's in the "run" position, power comes from a different switched circuit. There may be two problems:
1. Clean the ignition switch
2. check that there are no stray wires causing electrical bridges happening on the back of the switch which intermittently supply power to the parking light

[frankenduck]

When the ignition key is in the "park" position, power to the parking light comes directly from the battery.

Sort of. The red wire to the ignition switch connects to the battery and is always 12V+. In the #1 ignition position that power outputs to a gray wire that goes to the #2 fuse. From the #2 fuse it goes to the BMU via a gray/white wire and there's another gray/white wire connected at the same terminal that goes to the parking light. (Since both gray/white wires are on the same terminal the power doesn't go through the BMU.)

On a radio equipped K75RT there's a second gray/white from the #2 fuse that goes to the radio connector.

[daveson]

Yes, cleaning it could solve the problem, but then the rear tail light should also be on.

If, for example, it's only the park light coming on, and it remains on after removing fuse 2 (second from top) it's not the ignition switch but a wiring problem downstream from fuse 2.

If power to the parking light is coming from the ignition switch through the running circuit, then the tail light and instrument cluster back lights should also be on (and other cluster lights with ignition on, engine off) unlikely. In this case turning the handlebar left and right might cause the light to come on and off.

If the power is coming from the parking circuit, then the tail light should also be on but not the back lights (or any other cluster lights) as a battery saving feature.

Unlikely, but if you turn the key off and remove it before the key is vertical, it might be in park mode, then that's normal if the tail light is also on. I'm assuming the tail light is working or the red warning light would remain on.

[Brulaap]

All thanks for your replies, very helpful indeed. I've read everything carefully and will check all, but in any case I will also clean the switch as described in the PDF as soon as I can. 

[alabrew]

Best to trouble shoot it as Daveson suggests to verify everything working as it shuld.

With that done, you could probably just take the bulb out and not have to worry about it again.

I tend to turn the key past the parking position in to the "no man" land before the lock, w/o locking the forks.
A habit from the k12LT to kill the power to the gps.

I have the same occasional issue with the MB wagon, if you go past "Off" you turn on the right or left parking light.
I went out just the other night to find the right parking lights on.