Just Had My Pioneer Double Din Touchscreen Navigation Headunit Inatalled In My Car Friday, Was Gone 2 Install It Myself Like I Normally Do All My Headunits In My Vehicle's, But Haven't Got Around To It!! So I Treated Myself To A Birthday Gift & Paid My Buddies Stereo Shop 2 Install It For Me!! The Harness Seems 2 Be Working Like It Suppose 2 So Far!! But I Did Notice When My Keys In The Ignition & My Drivers Side Door Is Open The Bell Only Rings For A Few Seconds & Stops, Before With Factory Headunit It Continued 2 Chime With The Door Open & Key In The Ignition. Otherwise Good So Far!! Anything Starts 2 Fail!! I Will Be Leaving A Updated Review On This Harness!! My Vehicle 2005' Pontiac Sunfire/ Gm