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639 Posts
Discussion Starter · #1 · (Edited)
Some months ago I installed heavy headlight wiring with relays and a xenon high beam unit from DDM Tuning -


This worked out very well, and I decided to install a bi-xenon on the other side so that I'd both get a bright low beam and a workable high beam flasher. I used the same Morimoto H1 that Chutrain used, since it fits really nicely -


I don't have the headlight mounted in the bike yet, but the modification is complete and it was pretty easy so I thought I'd post a few pictures in case anyone else is thinking of trying this. I'd say the bi-xenon mod took about 2-1/2 hours, and you have to be able to fabricate one metal adapter plate. This plate (it's black in the attached photos) bolts to the Morimoto H1 projector, with each of the 4 bolts shimmed with 2 washers. Then my plate bolts to the OEM plate (matte silver in the attached photos), again with a few washers on each bolt so things line up nicely. I'm putting up front and back photos of the OEM and custom plates, and 5 photos of the assembly of the unit.

The shutter trigger on the bi-xenon wires to the high beam wires. That way, if I turn on the high beams or flash them, the high beam xenon bulb turns on and the high beam shutter on the bi-xenon moves out of the light's path.

The Morimoto H1 projector and ballast came from The Retrofit Source:

Bi-xenon: Morimoto Mini H1 5.0 - HID Projectors from The Retrofit Source Inc

This is the same projector Chutrain used - the site sells them in pairs for cars, but if you call you can buy a single projector and ballast. They offer a motorcycle kit, but the projector in the kit is slightly smaller in diameter than the H1 projector, and the H1 fits the early ST headlight extremely well.


Premium Member
293 Posts
Good detail, thanks.
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