Welcome to the forum!!
First the solid steps: I see this a lot, and not just on Keystone trailers. Were they factory installed or added at the dealer.
The battery: is it an RV/Marine deep cycle battery? If so what group and how many amp hours is it rated for? Unless you disconnect the lead from the battery, there will be some draw. Radio memory, LP detector, if your fridge is on the control board is drawing.
Has anybody tested the individual cells with a hydrometer?
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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