After an accident with my RadWagon 3, the throttle and PAS no longer works. I brought the bike to my local bike shop who have been helping me maintain my bike for 3 years now, and they found the rear hub connector wire has been damaged (photos attached). We are fairly confident that is the cause of the issue, and they are willing to fix it for me, but not without a diagram, instructions, or video that shows how to get into the rear hub and replace the cable. We understand how to remove the rotor and hub motor cover - it's everything after that which is a mystery. Does anybody know of any such instructions? I've been coming up empty on the internet.

Otherwise, I guess the other option is a new rear wheel with everything. I don't see those on the Rad website, though. Has anybody been able to get a replacement rear wheel  for a RadWagon 3 (26-inch)?

I'm simultaneously posting this to Rad's help center, just not sure how long it will take for their response. Thanks!