The main cable runs from the left camera hub to the gimbal board and WIFI board located in the rear arm.
The FPC Pitch ribbon runs from the right hub to the gimbal board.
Removing the black emblem disks from the hubs is difficult without damaging the parts. Carefully heating ONLY the black disk with a soldering iron can help, but caution is needed not to damage the connectors/sensor beneath.
Also be aware the left hub was sometimes the victim of excess adhesive application at the factory. The excess adhesive unintentionally joins the gray part of the hub cover to the spiral ribbon. The Spiral Ribbon is an extension of the entire Main Ribbon. If you damage the spiral ribbon or it's connector while removing the hub, the camera is essentially doomed. The spiral ribbon cannot be repaired, and it is one of the least available items to find. Ever.
If you already have it apart and just need a drawing, let me know. I don't know of any existing drawings/diagrams but I can make one this evening if needed.