I AM INSTALLING A PANASONIC 7" DOUBLE DIN.. I GOT THE WIRING DIAGRAM FROM AN 04' ES AND WAS TOLD THAT IT IS THE SAME FOR ALL OTHERS,(2002-2006 WITH OUT NAVIGATION) I ALSO ORDERED A DASH KIT FROM EBAY, WENT TO THE DEALERSHIP AND PURCHASED THE DOUBLE DIN BEZEL SINCE MINE DIDNT COME WITH THE NAVIGATION... IN THE NEXT 2 WEEKS I SHOULD HAVE IT INSTALLED. I WILL LET EVERYONE KNOW HOW IT TURNS OUT... IF EVERYTHING WORKS I WILL POST THE DIAGRAM AND DETAILED INSTRUCTIONS.. IF IT WORKS!