My problems with parasitics were CO2, propane and carbon monoxide sensors, and the outside stereo unit, but the TV signal amp was drawing more than the rest combined. In 4 days, my single bat [when new] was toast.
I now have solar and just leave everything on, no sweat.
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Aviator Wright Flyer #1919
Army Pathfinder Vietnam, 3 tours
DAV, MOPH, VFW, NRA, 1stCav. ABN