We got the one from wally world that comes with the slime kit.......has worked great for several years. Added a true 12 volt, metal and ceramic, cigarette lighter where the outside T.V. would be. Ran 10 AWG wire back to the DC distribution panel. Fused at 15 amp like the compressor. Actually tied into the same place we did for the additional outlets in the bedroom.
Don't have much use for holding tank heaters in FL.
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