Need help with Xbox install in car

[Adriano]

OK guys. I saw a post how someone opened their Playstation and tapped into the low voltage lines past the step down transformer to hook it up to their 12V power from the car without an inverter. I want to put in an Xbox this weekend and was wondering if anyone had done this to an Xbox. I don’t wan to use an inverter because it causes too much HF noise in the stereo and basically wastes power. Please help?!?!?!