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Thread: Bi Xenon HID H4 Bulb Question

  1. #1
    Registered User saylorspond's Avatar
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    Question Bi Xenon HID H4 Bulb Question

    To follow up on the recent discussion of HID light conversion kits, I have a general question for those who have installed a Bi-Xenon HID H4 bulb on an R1100RT or RS.

    After reading several forum discussions, I decided to purchase a kit from Xenon Depot (http://www.kbcarstuff.com/Motorcycle..._Kits_s/34.htm, Ontario). The quality of this set is excellent and the kit uses a Phillips bulb.

    One complication I have discovered, is caused by the new bulb's base thickness. Below I've attached a picture of the bulb from their web site.

    The polymer base is thicker than the usual metal H4 bulb base. As a result, the clamps do not lock down on the bulb base. While considering my options, I was trying to see if the clamp could be reversed and broke the plasic clip holding the hinge end of the clamp.

    So, does anyone have experience, or tips, on how to secure this bulb? Now that I have broken off the clamp, any suggestions on how to fix/rig the base to hold the bulb, without having to replace the entire light housing?

    Thanks for any
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    Last edited by saylorspond; 03-15-2010 at 01:34 AM. Reason: typo corrected
    Scott

    1995 R1100R (RIP); 1999 R1100RTP (sold); 2005 R1150R Rockster

  2. #2
    Registered User RINTY's Avatar
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    Scott:

    I had one of these in my '02 1150 RS, but I had my tech instal it, so I can't say if he had any issues. From what I've read, it may be necessary to file the receptacle out a bit, to get the fit just right.

    If you've got all your old BMW News, there was an article by Paul Glaves a few years ago, on an instal he did on one of their bikes.
    Rinty

    "When you don't know where you're going, any road will get you there."

  3. #3
    Registered User saylorspond's Avatar
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    Quote Originally Posted by rinty View Post
    Scott:

    I had one of these in my '02 1150 RS, but I had my tech instal it, so I can't say if he had any issues. From what I've read, it may be necessary to file the receptacle out a bit, to get the fit just right.

    If you've got all your old BMW News, there was an article by Paul Glaves a few years ago, on an instal he did on one of their bikes.
    Unfortunately, I think that article was before I joined. Do you, or anyone else, happen to recall which issue the article was in. Any suggestions as to repairing the clip "hinge?
    Scott

    1995 R1100R (RIP); 1999 R1100RTP (sold); 2005 R1150R Rockster

  4. #4
    criminaldesign
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    the one installed was a bit thicker, but with a little steady pressure I was able to clamp the hinge in place

  5. #5
    Registered User RINTY's Avatar
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    ...do you recall...
    Sorry, but that issue has been re-cycled. But I'll call my tech and see if he remembers how he did it.
    Rinty

    "When you don't know where you're going, any road will get you there."

  6. #6
    Registered User saylorspond's Avatar
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    Quote Originally Posted by rinty View Post
    ... I'll call my tech and see if he remembers how he did it.
    That would be great. In the meantime, I found a replacement "light bucket" on eBay. Once it arrives, I will see what I can do to get the bulb to fit.
    Scott

    1995 R1100R (RIP); 1999 R1100RTP (sold); 2005 R1150R Rockster

  7. #7
    Registered User rmarkr's Avatar
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    I have fitted 2 of the H4 bulbs and a couple of others where they should not have been fitted.
    I do recall making the "spring clip" from the (stainless) spring off of a rotary lawn sprinkler, and securing it with a small self tapping screw with a washer with the lip bent down.
    My K bike has a rotary type securing clip. The other possible issue is that the rubber boot will need modification or replacement, and clearance can be a problem due to the bulkiness of the Bi-xenon bulb housing.
    Mark

    "Of all the things I've lost, I miss my mind the most" Mark Twain

  8. #8
    Registered User saylorspond's Avatar
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    Thumbs up

    FWIW, here is how I was able to seat the Bi-Xenon bulb. The Bi-Xenon base is made out of aluminum, allowing for easy filing. I filed down the tabs to seat the bulb better. I would have had to file considerably more to match the standard H4 bulb tab thickness. Instead, I reversed the bulb clip (since I had already broken the "hinge" this was easy) and attached a screw to hold the clip in place.

    Name:  HID Bi-Xenon Bulb Installation.jpg
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    The rim of the bulb base is notched to accomodate the clip. I had to file one side (top right in the picture on the right), to allow enough room for the top clip to snap into the catch (hopefully this makes sense). I drilled a pilot hole for the screw, snapped the bulb in place and then added the screw and clip. This should be quite secure as the only way to remove the bulb is to either recess, or remove, the screw first.
    Scott

    1995 R1100R (RIP); 1999 R1100RTP (sold); 2005 R1150R Rockster

  9. #9
    Registered User RINTY's Avatar
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    Scott:

    I spoke to my tech yesterday, and he confirmed that they just file them.

    Good wrenching!

    I think the Xenon upgrade in the Oilers is a good one, as the stock lighting is totally inadequate for daytime running light use (I don't ride at night). I've also had kits installed in two of our cars, that have poor lighting.
    Rinty

    "When you don't know where you're going, any road will get you there."

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