Headlight Modulator?

[DrewDanube]

I think my headlight modulator is going blind or has done a bunch of LSD.  It won't flash during the day, will flash in the dead of night...
I guess my questions are:
1. Are they repairable/adjustable?
2. How hard is it to remove/replace?  
3. Any specific way to easily ID the brand I have?
Thanks!  If this should go to the tech board, just say so...but there is enough knowledge in TX, I shouldn't need to leave the state.

[SideCar]

If you have the same one I do, there is a wire that has the photosensor at the end.  It can get dirty enough to make the unit think it is dark outside. Fortunately, my bike is black so the incredible amount of dirt buildup doesn't show as bad.  Anyway, make sure that is clean.  The other thing that can happen on mine is that the toggle switch can get moved from one position to another.  Just a couple of thoughts.

[DrewDanube]

I will clean it.  Its been in a couple rain storms and if the rest of the bike is any indication, it is filthy too.  I don't think I have a switch.  I have one little switch but I think its an on/off for the GPS that I don't have. 
Thank you!

[BeeSharp]

Mine was acting wacky too or most times not at all. It came with the bike, so I didn't even it know it had one until I noticed and researched the photosensor.

Here is the adjustment procedure from Kisan: - http://www.kisantech.com/brochures/path-inst-manual.pdf
Mine works great now.

Jim

1.  Find a location or time of the day when you wish to BEGIN modulation
You can fine-tune the On/Off triggers from the default setting, as shown above.
2.  Turn the ignition ON, then flick the Hi-beam ON (3) times quickly
You have to begin this routine in the first 2 seconds after the ignition is turned on
3. The confirmation of the new setting is: Hi-beam flashes 4 times
If you don’t get this confirmation, try it once more – a little faster
5. Once set and confirmed by 4 flashes, the new Setting will remain in
permanent memory of the processor. It is not affected even if the battery
is disconnected or the pathBlazer unit is un-plugged.
- If you attempt the Sensitivity Adjustment in a very dark setting – beyond
the DOT specified limits – the setting will revert back to default level.
This will be confirmed as: Hi-beam flashes 8 times.

Note! To avoid unintended reprogramming of Daylight Sensor’s sensitivity, DO
NOT start the engine with the hi-beam on. During cranking, the battery voltage
can drop out and simulate the 3-time ignition on sequence.

[DrewDanube]

I think, now that I have seen more photo's...that I have the Kisan.  I will try cleaning the "eye" and re-programming the brain and see if it works. 
Thanks !!!