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Old 02-20-2014, 11:37 PM   #80
JustinP OP
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Joined: Jun 2011
Location: Sunny Colorado
Oddometer: 2,236
Originally Posted by Shawnee Bill View Post
I received my LR4 lights last week and got them installed and working today. Took a test ride after dark and they really light up the road and bar ditches. Love them!

Question about the Bypass/blue wire. I thought at first that was a 'trigger' somewhat like a relay, but now I'm thinking if there is power on it that is what feeds the light? If that is the case in order to bypass the dimmer with the bright light switch it seems I should use the bright light to latch a relay that would then feed power to the light? Or can I just tap into the bright power with the blue wire? This is on a F800GS with a Canbus, not sure how the Canbus will feel about using some extra power.

I hope you can understand my questions, I'm not sure they sense to anyone but me.

Thanks Bill, glad you like the lights :)

The blue wire does not supply any power. When connected to a 12v source, the blue triggers an electronic switch in the dimmer that bypasses the dimmed setting and sends full power to the output (gray/white). Did you see the wiring instructions posted here: - that should clear up any questions, but please, send me a message if you need any help.

As to the Canbus, I doubt that the small draw of the bypass wire would cause any issue. It only pulls a few milliamps. And, I would suggest using a Posi-Tap ( if you're tapping into the highbeam wire, or any other factory wiring. The directions I posted above should cover everything, but again, if you need any help, let me know.
FAST: 2004 non-ABS "Silver Bullet" FJR - FASTER: 2008 Touring/Endurance Hayabusa - SLOW: 1997 R1100GS
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