ive jsut fittd a pioneer ahv p6400 cd motorised screen headunit in my a3 n have decided i want 2 wire it up 2 my PS2 i have brought a lead that runs from the back of the ps2 to the red white and yellow RCA outputs in the back of the headunit i have connected it up n tries pressing source on the headunit but it just doesnt seem 2 work just tuner n cd works any ideas/help or isntruuctions on wiring it all up many thanx