12vdc gear indicator

Discussion in 'The Projects Forum' started by fredsmoot23, Feb 22, 2014.

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  1. fredsmoot23

    Thread Starter New Member

    Feb 22, 2014
    greetings earthlings,

    I am trying to build a gear indicator for my motorcycle. The shift lever moves up to choose a higher gear or down to select a lower gear. The motorcycle has a 12 volt dc battery. I thought about using six LEDs to show which gear I have selected, i.e. 4 LEDs lighted for fourth gear. No LEDs would light if I am in neutral. There is no speedometer in use.
    I would appreciate any design help with this project. I have wired control panels for stand-by generators in a previous life, so I have wiring, soldering and electrical schematic reading skills.
    Thanks for any help this list may provide me in this matter.

  2. poolman966554


    Jan 22, 2014
    on my sport bike, i found that the neutral light worked off the end of shift cam
    with an electrical pickup. There is a spring loaded knob that makes connection to ground, when shaft is in N position. I made a new piece of plastic with more connection points.

    At first, i made it so it was 1 led lit at a time, then i thought id get fancy and buy a cheap $1 led digit common anode display.

    just take yours apart to see if its the same method of proving neutral.

    Edit: the display i purchased
  3. Wendy


    Mar 24, 2008
    The owners of All About Circuits has elected not to host discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

    This thread is against the AAC forum rules, Chapter 6, as seen here:

    This can be found in our Terms of Service (ToS)

    Automotive modifications of any kind are strictly forbidden. Therefore, this thread will be closed.

    Please try to understand the reasons behind this action, and feel free to browse and use the forums.

    You might find answers to your questions in one of these forums:


    Another good forum that shares many of the same membership is http://www.electro-tech-online.com/ . Good luck.
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