Now that I'm home I can provide a link. We used an inverter in our 17z when we didn't have electric. You simply plug the inverter into the 12V outlet and it will give you AC power that you can plug a standard device into. What's great about the inverter is that when you're not watching TV, it enables you to plug any standard device in and have AC power, even when you're off the grid.
Here's one of the ones I use.
You can even use it in your car to power the kids games or any kind of portable device. I have a sal****er aquarium with coral and it's very important to have water flow throughout the tank. When you lose power, you have stagnant water. I've plugged the inverter into my van and then ran an extension cord into my living room to power some of my fish tank pumps to keep the water flowing.