Wire an inverter, preferably a pure sinewave version, either near your battery bank or in your entertainment center if not too far from batteries. As stated above, the DC power sockets within most rigs normally can not handle the current draw from an inverter which was the case for us.
Being that are entertainment center was located near our battery bank, we installed a small 350 watt inverter within entertainment center and ran wiring from batteries to feed it 12 volts. It runs our HDTV, HD Satellite, HD gaming\Blu-ray player, sound bar and subwoofer easily.
When RVing, we prefer boondocking and dry camping, we purchased our rig to enjoy all the amenities within and do so even while off the power grid. Being able to restore consumed amphours to the battery bank daily, utilizing both sufficient solar and occasional generator use keeps us going indefinitely.
