One interface does it all. No additional interface needed.Pioneer Kenwood Eclipse no problem the ASWC-1 works with them all plus many more radio manufacturers.Auto detects(*) the majority of vehicles on the market today and programs the steering wheel controls automatically.Auto detects(*) what radio the ASWC-1 is connected to.Updateable via a common micro B USB cable to ensure you have the most up to date inventory.axxessinterfaces.com has a dedicated section for vehicle information to aid you in the install.Non volatile memory retains the steering wheel control settings even if the battery is disconnected or the ASWC-1 is removed from the vehicle.The ASWC-1 can be manually programmed to most vehicles on the market.