The primary harness is the harness that plugs into your cars main entertainment system connector and converts it into a double ISO connector system (Universal). After selecting your primary harness you then select a secondary harness to connect between the ISO connectors and the aftermarket head unit that you have ( this is selected based on what brand and type of head unit you have. We carry both non steering wheel control type primary harnesses and steering wheel control type.
Iso Female Harness To Suit A Number Of Nissan And Subaru Vehicles
Designed To Plug Directly Into Your Factory Oem Radio Harness
Allows Easy Car Stereo Installation Without Altering The Car'S Factory Harness
Requires Additional Head Unit Harness For Easy Head Unit Plug & Play Installation