cut the cig plug for the power inverter, run the power wire of the inverter to the blue or green wire (I cant recall which but one powers the light ring the other the cig lighter itself, when you open your center console up you'll know which is which) then run the other wire to the ground.

Then its pretty much a done deal. The inverter wont survive crank, so if you're playing your game then start the car, youre gonna hafta reset the PS2.

PS Get an XBOX