Except for the structure, the majority of the items is an RV are purchased from OEMs. You can accomplish your goal for about 90% of your RV by going to the OEM and pulling a manual/parts list. You should have received a build sheet ( shipped with all RVs) when you signed paperwork. It will list the Manufacturer, model, etc for all the OEM items installed in the RV. If you do not have a build sheet, you can create one by checking the equipment one at a time. Keep a copy in the RV and at home it will come in handy if repairs are ever needed.
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels