I mentioned the Concertone (Concertcrap) problem yesterday mostly out of frustration, but wanted to add another pair of ideas that worked very well for me....
You, like I did, will be taking delivery during the off-season, so presumably it could be a few months before you get to do some real "camping".... So what I did (at another Forum member's suggestion), was pull anything with writing; the owners manual for EVERYTHING in the TT; out of the unit, put it all in a big envelope in the house. Then, over the winter, I'd spend my evenings reading over everything, and making notes on things that the mfgr's told you in their printed instructions that I had been doing wrong for the last two units that I had, or that the dealer(s) had SHOWED me wrong... (Biggest difference between my last two units - both Jayco's - and my current Rockwood was a different mfgr water heater, with different instructions.)
I then organized all of these materials, and my notes, and supporting or additional info of anything downloaded or obtained with additional purchases, into a pair of binders with the stuff in plastic sheets, all organized by "systems". The 12 volt stuff, 110volt stuff, propane stuff, running gear & chassis, etc...
I now have two virtual encyclopedias on all of the data specific to my unit which stay in the unit all season, so they are always handy. I still pull them out every off-season, so that I can research any contemplated mods or help someone else out when they can't find their instructions during that time. I'm now considering a modification to add solar panels this off-season, so having all my 12v info in one spot (end table next to my recliner!) is very handy.
Yet another suggestion - Go through the the unit, inside and out, and record the bulb # of every light-bulb in/on the unit. Then, after figuring out which ones you want to convert to LED's to conserve amps, obtain one or two spares for each, so that when someone comes up to you in camp or in a rest area and points out a burned out bulb that you had't noticed, you'll have the spare on-hand to make an immediate repair. Save the mounting card from the used bulb in a convenient (visible) location, so that you remember to replace it at the next trip to the big box or the auto parts store.
2014 RAM 2500 Laramie 4x4 Quad Cab w/Cummins Turbo Diesel, 2009 Rockwood 2607, and 3 'yaks!
300W of Suntech Solar, a Rogue MPT-3024 Controller, and a Xantrex PW2000 Inverter