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My understanding is that you need the Bluetooth inline junction box to enable Bluetooth connectivity on 11 speed Di2 systems (it comes as standard on 12 speed). I looked into this a while ago and it's hard to find decent documentation to explain what you need, so hopefully someone else on here has done it already and can explain.
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Check this from the Wjggle description of the Ew-rs910. You need an additional adaptor (SM-EWWU111) to actually communicate using Bluetooth.
https://www.wiggle.com/p/shimano-di2-bluetooth-junction-box-ew-rs910?
andyp
Alan_tbt
@Titch
After hive mind advice please!
First foray into lecce shifting, got an Ultegra shift-kit from @Olibob recently (thank you!) and finally getting round to finalising the parts needed to fit it to my 2021 Emonda (Ultegra).
The parts I’ve got are:
R8070 shifters
R8050 Di2 GS Rear Derailleur
R8050 Di2 Front Derailleur
BT-DN110 Di2 Internal Battery (with Emonda seat post mount adapter and grommet for chain stay exit)
SM-JC41 Di2 Internal Cable Junction
EW-RS910 Bluetooth Junction Box
Selection of cables (EW-SD50) which look long enough for the frame size when I lay it all out
Am I missing anything? (I've got new olives etc)
Will the EW-RS910 allow me to use the App and connect my Wahoo via Bluetooth or will I also need to add a 2-port inline junction somewhere?
Trying to make it as slick as I can, so have some heat shrink tubing to hand for cables as well as small cable ties for the wiring to stop any rattling inside the frame, but any hints/tips would be gratefully received!
Thanks!!