Good Morning!
I am building an Alfine Di2 bike (same as putting together a 1x10 or 1x11 system), and I was wondering...
Can I use the SM-EW90 A Junction Box to connect everything? This way, I also wouldn't need the B Junction box.
Since the SM-EW90 A Junction Box has three ports, they would go;
1. To the rear derailleur (Alfine hub in my case)
2. To the shifter
3. To the battery
Shimano Di2 1x10 or 1x11 setup without Junction box?!
Moderator: robbosmans
Yes you can as per Shimano's compatibility chart. You would just need long enough wires depending on where you mount the A junction box.
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