The below components are required for this upgrade
Honda Ridgline 2005+ DIN2 Conversion Kit
Choose between 1 of 2 harnesses depending on your connections you will check at the rear of your OEM head unit
Wiring Harness (2009-2014)
Wiring Harness (2006-2008)
With the above kit you can then install the CC3 DIN2 Universal
