this post was submitted on 27 Dec 2025
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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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[–] dgriffith@aussie.zone 14 points 1 month ago

My only guidance is: Do not assume the wire colours have any significance. Work your way through all the combinations, regardless if they are "logical" or not.