I installed the repeater for my TireMinder TPMS today.
First when I crawled under the coach I noticed this
That is the steel shield that protects the rear lower portion of the 100 gallon diesel tank. A lock nut was missing and after checking it out it appears the nut and flat washer were never installed. This I believe is a Freightliner issue. I went to O'Reilly Auto Parts and they didn't have a lock nut but they did have a nut and lock washer which will work for now.
For installing the TireMinder Repeater I found the 12VDC and Ground lugs on the back of the Onan Generator which worked great for the power connection using some 3/8 inch electrical connectors.
I mounted an illuminated switch just inside the generator compartment door and zip tied the repeated to the trailer hitch.
Now to install the sensors on this coach and go through the setup procedures again. The current setup is based on the prior coach.