Results 1 to 4 of 4

Thread: Wiring question, help please? Aux LED spots into High Beam

  1. #1
    Subscriber Click here to find out how to Subscribe
    Join Date
    Feb 2017
    Location
    Stamford
    Posts
    23

    Wiring question, help please? Aux LED spots into High Beam

    Hi,

    I have a 2012 GS and would like to put a pair of aux LED spotlights that I have unused on my light bar, and somehow wire them into the High beam circuit.

    I'd like to do this as I ride daily down single track lanes from the village at night and really like to have this in the bikes arsenal!

    I've tried this afternoon to do this but each time I switch on the high beam with the LED spots, I get a 'LAMPF' error and I have to switch off ignition and restart bike, etc.

    What's wrong with it please? How do I solve it and connect them up?

    I know it sounds stupid, but can someone do me a quick diagram please?

    Many Thanks in advance.

  2. #2
    Senior Member
    Join Date
    Aug 2006
    Location
    suffolk
    Posts
    234
    Sounds like a canbus problem. Wire them via a relay switched by the high beam circuit

    Tom

  3. #3
    Subscriber Click here to find out how to Subscribe
    Join Date
    Feb 2002
    Location
    Loughborough
    Posts
    15,339
    The system is seeing a bulb error because it's picking up that your load is out of threshold. Are you connecting to the main beam circuit using a relay or putting the side lights directly onto the main beam wire?

  4. #4
    New Member (less than 15 Posts)
    Join Date
    May 2017
    Location
    Midlands, UK
    Posts
    3
    Hi,

    I've had a very similar issue when trying to replace the high beam bulb with an LED version, that too came up with the 'LAMPF'. To monitor the bulb state, the bike monitors the voltage drop across the circuit (think wheatstone bridge), the issue is that the LED's have a much lower resistance than the headlight bulb.

    As suggested by sanqhar, if you take a feed off the high beam wire on to one side of the coil of a relay, the other side of the coil to the battery negative. The relay will then operate (energise) as you turn the high beam on. Take a feed (fused) direct from the battery positive to the C (common) terminal on the relay or the NO (normally open) terminal if there are only 2 terminals. Wire the other side of the relay to the LED lights (positive) and the LED negative goes back to the battery. It is probably worth connecting a reversed biased (wrong war round) diode across the coil terminals of the relay to prevent any back EMF from causing issues with the bikes electronics.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Anyone attending a Ride Out or Event organised through the UKGSer Forums does so at their own risk.
UKGSer.com or anyone organising an event posted here will not be held responsible in any way for damage or personal injury sustained while attending any such events.

Members attending any such event do so at their own risk.

The text, images, graphics, sound files, animation files, video files, and their arrangement on this Website are all subject to copyright and other intellectual property protection. These objects may not be copied for commercial use or distribution, nor may these objects be modified or reposted to other sites without prior written permission.

Disclaimer: Use or depiction of the BMW logo or trademark throughout this web site is for illustrative and editorial purposes only, and to the benefit of the trademark owner, with no intention of infringement of the trademark.

The UKGSer Forums may include adult content for which it cannot be held responsible. Your use of this website constitutes acceptance of the UKGSER network privacy policy

"Its about being a grown up hooligan - and if that means a dark visor, remus open pipe and a bit of speeding out of town then all well and good"