Is it possible to Wire up ST-785 hydraulic shifters with the new bar mount ew-rs910 junction box?
I believe there is a single junction port on these shifters. I believed, wrongly, there were multiple ports.
If so it scuppers the wiring plan I had. One cable from junction box to shifter, shifter to shifter and the one to the varvend box.
Any advice gratefully received!
Shimano ST-R785 Compatibility EW-RS910 Junction Box
Moderator: robbosmans
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I have done it and it works fine. The only thing you need to do is add a SM-JC41 4-port junction box inside of the bars to give you the extra ports that you will need. You might think that the new Y cables would help but they didn't help me because the cable lengths didn't work out with my bars. So, what I did was put the EW-RS910 in the right end of the bars with the SM-JC41 just a little further inside the bars. One wire goes from the left shifter to the SM-JC41, another wire goes from the right shifter to the SM-JC41, a third wire goes from the SM-JC41 out of the bars to the rest of the bike, and a short wire from the EW-RS910 to the SM-JC41. All of the wires were internally routed inside of the bars.