12 volt TV questions

It would get power from the 12v system. You may or may not need to add a 12v outlet near the tv mount.

I don't understand the "capabilities" question.. it's a tv.

This is only "an issue" if you intend to camp off grid or boondock without 120v.. 

Originally posted by Unclewillis yes, we camp off grid a lot with solar. By capabilities, I mean will the TV do everything a AC do? will it be HD, Will it have stereo outputs for sound? same channel scan? just stuff like that.

Yes. The power source is just that. The truth is, most tvs are low voltage to begin with.

Another possible option, since camp of the grid a lot, is using a portable DVD player. If you are out in the middle of no-wheres-ville you probably don't get many over the air (OTA) channels anyway. So, consider the use of a self contained portable DVD player that is powered by rechargeable batteries. Before we got the POD we tent camped and used one in the evening and charged it during the day in our tow vehicle while we were out on excursions... worked good. 

Your options depend on your goals. If you already have a TV and are satisfied with it, but it only runs on 120VAC, you cheapest option is a 150-300 watt pure sine wave inverter. However, this is also the least efficient from a power standpoint. Efficiency is important if you spend time off the grid because it affects battery life. If you value efficiency or are otherwise less than satisfied with your existing TV your best option is a 12VDC TV. A direct 12V TV
eliminates the losses incurred with a DC-to-AC-to-DC power conversion. Majestic Global makes a nice, though pricey, line. These TVs have all the bells and whistles, inputs, DVD player, headphone jack, remote, etc.