OK - finally got around to reworking this, and I'm real happy with the results.
I found models for the connectors on the Molex site - although they weren't dimensionally accurate - they were a good start.
I redesigned the connector retention features from scratch. You'll need to make sure you scaling is on-point because I only have .1mm clearance in the model.
There's a lot of support in this build but most of it comes off easy. I used Hatchbox ABS, the .35mm nozzle, and a .18mm layer - which builds on support pretty clean and breaks away easy.
There's not a lot of room to stuff extra wiring inside. I had to replace my harnesses a couple months back. I stripped off all the sleeving, tape, and ties. I then started at the top and dressed the wiring pretty - working my way down to the box. Then I tied and wrapped things up stuffing all the slack in the box at the bottom.
