I would say that you would be safe to install a video system with that. Using a LCD/TFT display does not require very much power at all. The main drain would be the Playstation, but it sounds like you won't be running that from the 25A breaker. I used to have 2 7 inch widescreeds in my Acura Legend and I ran them off the 20 amp radio fuse with NO problems... I also had a SONY XM Radio PnP hooked on that SAME fuse. I say go for it.