AFTERMARKET HEADUNIT Model: APP7220 Brand: AERPRO Category: HARNESSES Type: APP SERIES This Aerpro ISO Line Converter serves as an amplified speaker converter for Mazda CX5 (2015-2017), Subaru WRX (2014-2015) and Toyota RAV4 (2013-2018) vehicles with factory amplified systems. This harness has been designed to retain amplified speakers in these vehicles when installing a compatible aftermarket headunit (the headunit requires front & rear RCA outputs). Key Features: Enables amplified speakers in various Mazda, Subaru and Toyota models to work with aftermarket headunits Standard ISO connector system to 4 RCA plugs, easy installation The aftermarket headunit requires front and rear RCA preouts Specifications: HARNESS TYPE: AMPLIFIER RETENTION PLUG TYPE: ISO CONNECTION TYPE: 4x RCA PLUGS NOTES: Designed to retain amplified speakers in various Mazda, Subaru & Toyota vehicles when installing an aftermarket headunit. For factory amplified systems only Aftermarket Headunit requires front and rear RCA outputs White RCA (front left) Grey RCA (front right) Purple RCA (rear left) Green RCA (rear right) Please check for any wiring information, specific to your vehicle, on the relevant Aerpro Vehicle page