Hi and Welcome to FRF!
There only is a generic owners manual with no model-specific nor model-specific information. It only covers basic RV systems information. You can download the current one and it won't be much different than the 2012 one.
Most in your situation, get the make and model number of the important things(like fridge, a/c, furnace, WH, oven, converter)and download the manual from each manufacturer's website. RV manufacturers are essentially assemblers, of things from various other manufacturers.
This might help some:
https://www.rvusa.com/rv-guide/2012-...an-2150-tr4995
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Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity