Hey Andrew My Toyota dealer offered to install a roof mounted dvd player into our (Merlot) KX-S, I think he recommend a Pioneer system, that way he said the boys in the workshop could connect it all correctly, the unit was around $700. I elected instead for a system which has 2 removable screens on the back of the front headrests, has headphones or speakers for $250, works a treat and there was no need to muck around with the roof lining/electrics etc. Bad news on your PS2, you need a 400w inverter to run (if its the thin version) which will need to be hard wired to your battery. For some reason the older bigger version only needs a 300w inverter which the cigarette lighter should handle. The guys at Jaycar did caution me by saying that they have had mixed success running Ps2's in cars, by "mixed" they mean they have blown a couple up (the PS2 not the car)!!!, so be careful. I'm not a sparky so there maybe someone else on here who could provide you with some more advise. Cheers, Mark