Hey just got an 06 Accord (EX according to carfax maybe EX-L). I was googling wiring diagrams for the Nav unit but I couldn't find one (all appear to be aftermarket ads).
Looking to add AUX or BT to the OEM unit.
Thanks for the help.

Also if I turn the steering wheel left or right for turns it will click. I read it might be the clock spring or something of that nature. They did do the airbag replacement.

Work so far...
Rear brakes and rotors
Engine filter
Transmission fluid change
Bt upgrade

Edit: done

Added an auction/iPod adapter for my model off Amazon. Had a Bluetooth iPod adapter. Total cost for upgrade $22. Had to buy a $15 trim popping kit. Every piece came in handy doing this project.

The plug is the top middle. It is the only one it can go into. Wasn't rewiring anything. Lost satellite radio but I don't care. Only annoying part is the BT disconnects when I open or lock the doors. Don't know why.