Yes, you can use the TV. The trick is going into the stores and buying a TV that has a DC power input. Then you just buy a 12 volt cigarette universal adapter from Canadian Tire. I bought
this RCA TV for the trailer; it draws about 12-15 watts or 1-1.25 amps 12VDC. LD had it on sale for $120 last week, and when I bought mine I got it at Walmart for $98.
As for LED bulbs, the bulbs I have been buying have been
these ones from Deal Extreme. They do take up to 4 weeks to get here, and be sure to look around their site as they have others. I just felt the power usage to light produced ratio worked out best for my needs. Some people on another RV forum I am on have been putting in LED panels, but then you are using 2-3 times as much power as these little guys.
I do have a comparison available if anybody would like to see it;
click here