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If your new trailer comes with a panel and controller installed by the factory, it should be wired to the battery on the tongue. Adding another battery will give you more battery reserve, and if you do install an inverter a second battery would allow longer time for the inverter to provide 110V to the circuit(s) powered by it.
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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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