Ever hear of an inverter? Or a portable DVD player?
I haven't installed one on my boat yet, but it's tempting. Perhaps next
year when prices are further reduced.
It could be done...don't think the HD part is really worth the effort
at the moment. We use a Sony which works great....see it here.
http://hometown.aol.com/bobsprit/images/navnavyweb.jpg
RB
35s5
NY