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Roxim Z3EK Headlight Wiring (lemmy.world)
submitted 10 months ago by to c/askelectronics@discuss.tchncs.de
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I have a Roxim Z3EK bicycle headlight. This light is supposed to have a low and high beam function, but I can only get the low beam to work. So far, I have tried:

  • grounding the green wire
  • sending 12V+ to green
  • sending 12V- to green
  • bridging the green and black wires
  • bridging the green and white wires

I emailed the manufacturer asking for a wiring diagram, but no response.

I appreciate any guidance y'all might have. Thanks!

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[–] -2 points 10 months ago (1 child)

In my opinion bicycles should not have a high beam, but here goes:
Look inside, do any components look fried?
Can you get the led to light by applying the a low voltage with a current limiting resistor directly to it? If I don't know what to do with the circuit I would probably go outwards from the desired results.

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  • [–] [S] 3 points 10 months ago

    In my opinion bicycles should not have a high beam

    This is StVZO-compliant light, i.e. has a sharp beam cutoff.

    Look inside, do any components look fried?

    Tracing the circuit was my first thought. It would be difficult to open the housing non-destructively. Even if I could open the housing, getting it back together and restoring its IP rating would be sloppy at best.

    Can you get the led to light by applying the a low voltage with a current limiting resistor directly to it?

    Yes, the low beam works starting at ~7V with the negative and positive supply attached as pictured.

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