A tidy wiring job should survive a seat adjustment and a pedal swap. Start by planning where each cable needs to go, then choose the places where you can hold it against the frame. If you fasten every cable immediately, a short lead can force you to redo the whole run.
Follow the frame
With the equipment off, lay the cables along their planned paths. Use the inner side of a rail where practical, away from feet and the seat slider. Check that the connectors can reach and that the cables avoid sharp edges, pinch points, and cooling vents. Keep enough slack at each plug to connect and remove it without pulling on the lead.
Make a loose service loop where a cable crosses from a fixed rail to a moving part. Adjust the seat, pedal plate, or monitor through the range it will actually travel. Look for changes in cable tension and places where a loop could get trapped. Shift the anchor point if the connector moves when the hardware does.
Fasten the runs you’re happy with
Use reusable ties or clips along the straighter sections and leave each connection easy to reach. Where several cables meet, a channel can keep them together. Start with the cable management collection if you need clips or channels, then check the mounting details against your frame.
Label both ends of leads that look alike. Before calling the job done, try removing the one device you unplug most often. If you have to undo the entire bundle, make that cable its own run.