The CB1100 Community Forum

Does the bike have an optional power supply in the wiring harness in the headlight?

Yes, for sure, 2013 & 2014 have a 2 pin connector covered by an orange or dark red plug.
I use it for my GPS and camera source, B+
May provide picture later

I'ts also tied to the ignition system so when the key is off, it's off. Very handy for a forgetful old fart such as myself.

The aforementioned red connector is in the headlight bucket. There is a thread Here: http://cb1100forum.com/forum/showthread.php?tid=11123
That goes into some details about it.
Jim

This link shows the inside of the 13 bucket and the accessory connector. Will be similar for other models.

http://cb1100forum.com/forum/showthread....9#pid87099