The mode settings are for the high beam bulb when the bike is on low beam. The low beam is always on at full brightness, and when you go to high beam both bulbs are at full brightness. The high bulb on low beam is why its a twinlight.
The descriptions are the the manufacturer covering his tailbone. The device places no restrictions on what you set.
The setting you are doing is based on the light sensor - like you are saying. When you are in sunlight you are setting the daytime mode. In the evening or indoors without too much light you are setting low light mode. You can also try to cover the light sensor to get low light or use a torch to get daytime mode, but its more difficult.
Mode 9 with full modulation will make you stand out, but I've got a customer who was pulled over by a cop didn't know enough about the compliance standards to know that modulation is the legal way to run a high bulb on low beam during the day. Mode 17 during the day or mode 26 would be my preference for your bike. My Hella refectors are pretty efficient so I have to take a step down. Setting mode 17 during the day and mode 19 at night iwill make your bike look like it is supposed to have both bulbs on low beam, and won't cause any issues for oncoming drivers. If you think it does take the night mode to 20. Set like that the bike looks normal, and your lights are bright enough for cars to see you better during the day.Posted on: 16 April 2011, 15:48:39
Just to show you the Twin Light effect. (You probably saw them on the site when you ordered.)
This is low beam day and night. The low bulb is the bright one. (Firebolts have low and high the opposite way around to Ulys and Lightnings)
This is low and high at night. I didn't bother setting the camera to get absolute light level comparisons. It is automatic exposure, otherwise the low beam would look the same brightness in both pictures.
The only other Ulys who bought them don't have the comfort kit. I've heard from a friend that he had problems wiring his GPS around the fan shroud. The manufacturer has another harness for longer bikes, and we may have to look at a Uly version from what you say Squidbuzz - thanks for the tip. The wires are hard to get through but they do go in.
I just noticed that'd I'd posted them up in this topic before. Anyway it shows what the TL effect is.