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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I suppose you don’t have the original power source, if you did then measuring the output would be my starting point.
If it’s LED then it’ll probably be a single LED using PWM. In that case try figuring out where the switching circuit is.
If it’s not LED, you should measure resistance between the wires, that would tell you which one is the common. .
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.
Where does it normally plug into? If it plugs into some sort of computing device, then yeah, one of them MAY be signal (probably LIN). If it could function with a simple switch however, then as the other said, try every combination possible.
It’s possible the green is a data wire. The light might start in low by default and be looking for a change state to switch to high.
Oh! That is an angle I didn’t consider. I’ll start looking into possible signals I can send. Thanks!
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.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.
