Re: 03-06 Accord head unit install
That kit is the correct one for the 03-06. It goes in place of the cubby storage (so the little flip door thats there right now will be removed to install this kit, the new stereo will be exposed and not concealed).
The harness to the factory radio can be disconnected and connected to the new radio, leaving the factory stereo un-useable, but all the climate controls intact. Connect the harness, antenna, and any RCA's to the new radio, just like you would if you were replacing the factory radio, its simple.
I didn't want to bother with the hassle, so I went with the JL Cleansweep, good sound and factory stereo is retained. JBL is releasing a really sweet OEM integration device, the MS-8, it might be worth looking at.
2005 Honda Accord EX Sedan
JL Audio Cleansweep, JL Audio ZR650-CSi, JL Audio 12W3v3 in custom stealthbox like enclosure in trunk, JL Audio A6450, Audiocontrol DQXS w/DDC
Sony 32" XBR BRAVIA LCD, Toshiba HD-A1 HD-DVD Player, B&W 704 Floorstanders, Rotel RC-1070 Pre amp, Rotel RB-1070 amplifier (130x2), Rotel RCC-1055 5 Disc Changer, HTPC as music server and PVR, and XBOX 360.