Cheap & Easy Brake Light

Discussion in 'Lighting and Electrical' started by cannonball2, Jan 23, 2012.

  1. cannonball2

    cannonball2 Active Member

    Joined:
    Oct 28, 2010
    Messages:
    3,472
    Likes Received:
    0
    Im a fan of cheap and easy, and have written a few threads of similar titles. While building my Lifan 125cc I began to think this bike will draw more scrunity from local Enforcement, so maybe it should have a brake light. I found a LED trailer clearance light on ebay for $3, it super bright. I mounted it in a well seen location below the seat. It came to me to use the brakes as a switch. I added a throttle stop to the cable between the levers. I then mounted a contact screw to a piece of stiffer but flexible plastic with a screw for a contact. Simply make the lead to the brake always on and hook the ground to the screw with a ring terminal. Adjust the throttle stop to hit the screw about 1/4" before the brakes seat. It makes positive contact and the plastic flexes increasing contact pressure. This is on V brakes but probably can be adapted to most brakes where you have access to cable travel. There is no danger of a short if the wire gets loose as it is a ground, light just will come on.
     

    Attached Files:

    • 010.JPG
      010.JPG
      File size:
      88.5 KB
      Views:
      135
    • 011.JPG
      011.JPG
      File size:
      89.6 KB
      Views:
      137
  2. 2door

    2door Moderator
    Staff Member

    Joined:
    Sep 15, 2008
    Messages:
    16,294
    Likes Received:
    11
    That'll do it. The K.I.S.S method usually works well.
    Very nice and clean. Thanks for sharing.
    Tom
     
  3. cannonball2

    cannonball2 Active Member

    Joined:
    Oct 28, 2010
    Messages:
    3,472
    Likes Received:
    0
    Thanks Tom. Hopefully it may be of some benefit to builders needing a simple brake light.
     
  4. cannonball2

    cannonball2 Active Member

    Joined:
    Oct 28, 2010
    Messages:
    3,472
    Likes Received:
    0
    Finished wiring the bike and must say the brake light works extremely well. Very bright and easily seen. The ground switch set up is flawless in operation. I cant imagine it would ever wear out. May(or may not) require adjustment over the life of the brake pads, but that is done in a few seconds with a screwdriver. If all things were this easy!
     

Share This Page