See the image: How do I securely attach the cable to the dynamo?

Annotated photo of dynamo and cable

I tried the obvious, threaded the cable through one of the holes in the plastic cover, and pressed the cover snugly onto the socket. This was OK for some rides, but in the end the plastic cover fell off and the cable is loose.

  • Assemble it as in the manual, and cover with electrical tape tightly.
    – Batman
    Dec 13, 2013 at 16:54
  • Can't tell for sure from the photo, but it looks as if there are a couple of screws there. One would think you're supposed to loosen a screw, slide the wire under, and then tighten. Dec 13, 2013 at 18:19
  • @Batman There was no manual included that explains how to do the electric connection.
    – feklee
    Dec 13, 2013 at 19:14
  • 2
    youtube.com/watch?v=OhjA4K3rT_w seems to be an instructional video by the manufacturers. Since one of the covers is gone, you may want to get another one, reinstall it and then add some electrical tape to prevent it from coming loose.
    – Batman
    Dec 14, 2013 at 3:45
  • 2
    In any case, if they're popular, you should be able to take it to a shop that sells these and they should be able to explain the wiring hookup (and if you can document it better, you may help someone else in the future!)
    – Batman
    Dec 14, 2013 at 14:31

1 Answer 1


I called the shop where the dynamo was bought, and let me explain how to connect a cable. My summary:

  1. Unplug the plastic cover from the correct socket: One is for ground, one for phase.

  2. Thread the dismantled tip through one of the two holes in the cover. The length of the dismantled tip should be so that part of it protrudes below.

  3. Bend the protruding piece by 180°. The plastic cover is recessed to accommodate the piece. See the photo below for the final result.

  4. Press the plastic cover on the socket.

When posting the question, I had missed step three.

Photo of plastic cover with cable

  • Hey could you post a photo?
    – Deesbek
    Dec 18, 2013 at 1:21
  • 1
    @Deesbek Photo added.
    – feklee
    Dec 20, 2013 at 9:22
  • 1
    Just for reference, Shimano hub dynamos use a very similar trick, just that there, a plastic sleeve is put around this black thingie and the whole shebang is plugged onto the dynamo's contacts.
    – arne
    Dec 20, 2013 at 9:29

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