not sure if this has been covered before or not, but i just found out now
This DIY applies to Civic 06-09 with dual DIN kenwood MP4090 player ( vti with black kenwood player )
Time required : 5 min
Difficulty level : newbie
Tool required : small flat head screw driver and couple of working brain cells.
Part 1
1. In standby Mode of kenwood mp4090, Press MENU for 1 second
2. inside the menu, using AM FM joystick, move to AUX OFF
3. using left and right movement on joystick, shift AUX OFF to AUX ON
4. Press MENU to exit.
now when ever u press SOURCE, u should see AUX along with CD and TUNER.
Part 2
1. now need to locate the aux input rca ports
2. just below kenwood mp4090 and AC controls, there is a small cavity next to cigarette lighter. you will access the ports thru it.
3. top side of that area has a removable plastic plate. just us any flat head tool to remove the plate, there are no screws, just a clip.
4. search for a rca ports wrapped in yellow protective foam behind other wires.
5. pull them out, attach rca to phono cable( or any other suitable cable u require ) and ur done.
6 enjoy.
picture attached below for reference.
