I never liked the unbalanced look of having one light on low beam. I've been working on it with Ecliptech for a couple of years now. We will have a Twinlight driver adapted for Buells ready next week. The Buell version is fairly generic and will fit most bikes that run high beam as a separate bulb. They are compliant for street use in Australia, the US and Canada at least.
I will have a special offer for ST.N members.
This is my Firebolt on Low beam
There are 23 settings, plus a lot of other configuration that most people wouldn't use.
The main things for me are:
- Delayed headlight start. Lets you start the bike without the lights on. Better for the bulbs, better for the battery
- Automatically powers the high beam bulb at 63% if it detects that low beam has blown.
- Power through separate live and earth from the battery through a solid state relay. With the bike idling, a single bulb is 20% brighter than going through the stock wiring. When both lights are on (Firebolt high beam or High beam with the mod in this thread) each bulb outputs 60% more light.
- Daylight and Low light modes automatically controlled by a light sensor.
- Low light mode runs both bulbs full on high beam and on low beam the high beam runs at 46% which is the same apparent forward light as a running lamp, but because the bulb is centred (position light bulbs come through the bottom), the light is spread evenly around the housing and looks “normal” like in the picture above.
- Daylight mode, to be compliant, high beam must modulate. The amount of modulation can be chosen. On an I4 the most discrete modulation is about the same as suspension travel when riding. On my bike at idle you have to look at the bulb to see the modulation over the flicker from the vibration of the bike. The daytime brightness is also selectable.
- The module is overload protected. It will turn off if the current exceeds 10A. It will try again 3 times, and if he current draw remains high it will turn off.
- It has a fuse near the battery. This is good practice. If there is a short between the unit and the battery the fuse prevents the battery from cooking and potentially catching fire.
The settings allow the bike to look like two headlights are normal without appearing excessively bright or distracting to oncoming traffic.
If you run a Philips +50% bulb in the high beam and a standard bulb in low beam the two bulbs appear the same colour when switched to low beam.
Ecliptech measure more forward focused light from the Twinlight running with a Philips +50% bulb than HID bulbs in reflectors designed for Halogen bulbs.
These are a straight plug fit on a Firebolt. No cutting or crimping. You take the high and low beam wires off the bulbs and plug them to the inputs on the Twinlight. You take the outputs from the Twinlight and connect them to the bulbs. There are two leads to connect to the battery and the instructions show how to route the wiring. The controller unit itself is miniature and just cable ties into the wiring.
Lightnings and Ulys will need to do the mod in this thread and then connect the same as the Firebolt. The Twinlight microprocessor is then powered by the low beam circuit. The low beam input can also be spliced into any wire powered by the ignition, but doing this mod seems like a good way to work around cutters and tape.