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Thread: To run a K2 without battery/rectifier, which wires need bridging please?

  1. #1
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    To run a K2 without battery/rectifier, which wires need bridging please?

    Wanting to try and fire up the k2 to give my 4yo a ride round the yard before I sell it, have a bunch of wires but no battery, is there a basic way to hotwire it to get it to run without a battery or does it need one? Iíve had other Hondaís that wonít generate a spark without a battery

  2. #2
    Forum Founder Classic Honda 50's's Avatar
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    Run a single wire from the Black/White wire coming from the stator through a stop switch to the ignition coil and then to earth.

    Similar to a Z50R set-up:
    Z50R Wiring Diagram.jpg
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    Forum Leader OldBikes75's Avatar
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    Connect the 2 black wires (if i remeber the color correctly lol) at the battery connector.
    still learning.....

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  5. #4
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    I have a black wire already from the stator to the coil and branching off to the key switch. But no spark. Must be either a faulty coil or points/condenser issue. Not sure how to check these.

  6. #5
    Moderator MattyP's Avatar
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    At the battery plug there is a black wire that need to be connected
    Life is too short for cheap carbs...

  7. #6
    Moderator MattyP's Avatar
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    You can also try just unplugging the key switch from the harness. That's what grounds the ignition circuit
    Life is too short for cheap carbs...

  8. #7
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    I have a bunch of wiring taped together so hard to tell what’s what. Never really got to look at it much. Was to be a project but after collecting all the missing pieces I’m going to sell and move on.

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    2 black wires in the battery connector? Which connector is that?

  10. #9
    Moderator MattyP's Avatar
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    The one at the battery, but that's on an original harness. I don't know what you have.

    Or connect the back wire from the motor to the coil directly to bypass the harness.
    Life is too short for cheap carbs...

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