Pw120A i think it's called with a voltage regulator, since then I've noticed that the 12 volt side can't be 11.9x anything, I need 13+ V on the car side to be able to facilitate the voltage drop across the regulator / DC Power Supply... which means I'll eithr have to get a volatge amp to have the car be able to suspend to disk, when teh key is removed, maybe with Turbo Timer it won't be a big deal since the altenator is still cranking 14v into the car.... we'll see... right now I'm just to busy to yank the stereo and start measureing the interior to see how much depth I have in teh stock DIN Slots...