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PhilDAS
I'm setting up my first bike with Di2 (Have Sram Etap on other) and come into a bit of a challenge, bike was setup as 1x but I'm converting it to 2x, bought a new junction box to go into seat tube, when the FD isn't connected the shifting at the back works and the battery charges but when I put in the connector for the FD it stops charging and working. I've tried both the current and a new cable for the FD.
Any pointers at to what I can do to troubleshoot?