It took some searching, my wife always gives me a wierd look when I do this, but I always look at the back of the TV's when I go to stores. There are not so many brands out there any more that use a small transformer from 120vac to 12vdc, but they are out there. Last year I found a 19" RCA LED LCD TV that used 12vdc input. I happen to have several plugs that have the same polarity as the TV power input, and they have an end that goes into a 12vdc power socket/cig lighter socket, and it works awesome. Best part is, with the LED back lighting, it does not use much power and it is now an HD screen, colours and clarity are way better than the older LCD unit I had before.
Tow Vehicle: '92 F350, Crew Cab, 4X4, Cummins 5.9 24 Valve, 6spd.Driver:Clint, Navigator:Melanie, Entertainment: 3 Boys (24,22,20) and now girlfriends too, 1 dog (Great Pyrenees/Akbash cross). Mission Statement: Just another adventure! Towed vehicle:2009 Roo 19 with lots of mods!