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Thread: ! Questions about the LKM Headlight Fix ??

  1. #1

    Default ! Questions about the LKM Headlight Fix ??

    Hey Everybody, I've got a '91 5.35i and it has the Low Beam flicker problem.
    I've looked at the BMWE34.net solution. My question is this, where are you actually supposed to solder, from the looks of the picture you're supposed to solder all of the seperate connections together and just make the relay a straight through. Is this correct, or am I totally mis-reading the instructions, any help you could throw out would be great, especially if you caould add some pics in, too.

    Thanks,
    Excalibur_007

  2. #2
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,281

    Default

    Resolder all, including the socalled mustard relay
    http://www.e32fixes.com/results.asp

  3. #3
    Join Date
    May 2004
    Location
    Vancouver, Canada
    Posts
    1,301

    Default

    well the instrucitons are pretty clear.. when i did mine i simply re-soldered the outlined connections, 4 total if i remember correctly. i also touched up a couple that looked as thought they might go in the future

    just open her up and have at her
    -inc


    '91 e31 850
    '90 e34 535
    '02 CBR F4i stunt/track bike
    '07 gsxr 750 stunt bike

  4. #4
    Join Date
    Jul 2004
    Location
    Perth, Western Australia
    Posts
    54

    Default When I did mine,

    Quote Originally Posted by Excalibur_007
    Hey Everybody, I've got a '91 5.35i and it has the Low Beam flicker problem.
    I've looked at the BMWE34.net solution. My question is this, where are you actually supposed to solder, from the looks of the picture you're supposed to solder all of the seperate connections together and just make the relay a straight through. Is this correct, or am I totally mis-reading the instructions, any help you could throw out would be great, especially if you caould add some pics in, too.

    Thanks,
    Excalibur_007
    I got my soldering iron at operating temp and just rested it on the contacts until the original solder melted, then took the iron off and let it re set. No problems since !!

  5. #5
    Join Date
    Jan 2004
    Posts
    1,342

    Default The problem is that the solder points break ...

    over time loosing the connection between the component lead and the printed circuit pad.

    The idea is to renew these solder points. Generally, melting again the solder and letting cool back will do it, I do prefer to remove the old one and add some fresh solder (resin core will clean surfaces and provide a longer lasting fix).

    The points that generally break over time, are mainly those carrying high currents, like the relay main contact leads, the monitoring resistors leads, and the LKM power contacts. You can identify those as they are normally huge comparing to mere electronic control points. The power paths for Low Beams at LKM is from Pin 2 to Pin 21 for left and from pin 2 to pin 21 for right. Resolder all the components on this paths.

    REMEMBER. The idea is to replace the LKM to its original condition, not to modify it, establishing bypasses or new connections.

    Javier
    Last edited by Javier; 08-19-2005 at 07:29 AM.

  6. #6
    Join Date
    Mar 2005
    Location
    Long Beach, CA
    Posts
    2,563

    Default

    REMEMBER. The idea is to replace the LKM to its original condition, not to modify it, establishing bypasses or new connections.

    Exactly!

    Ralph Mendoza Jr. - Long Beach, CA

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