I know this isn't exactly what you were looking for, but it answers some of your questions.
o I'm not sure what you mean by "the battery setup is different". Can you fill us in?
o The car does charge the battery while towing
o No TrailManor, including this one, has an inverter
o The battery does charge from shore power
o The refrig is 2-way, not 3-way (which means propane and 120 VAC power, but not 12 VDC power).
By the way, I found this document on The Wayback Machine, Jan 16, 2009. It's a bit time-consuming, but if you spend some time there, you might find something closer to what you are looking for. Remember that PMs (Private Messages) on this forum do not accept attachments.
When you emailed your parts inquiry to TM, did you address it to
[email protected]?
Bill