• I'm thinking of doing 1x Di2 with Shimano XT Di2 rear and Climber Switch on Trp Hylex.
    I want to have it as clean as possible, so is it possible to extend and route the climber switch down through the Di2 port down to the 2 port junction box that is inside the frame?

  • I think you still need the Junction Box B as this contains some of the brains.

    Junction A contains some active components. Junction B is just a dumb cable joiner.

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