For Installing an aftermarket car radioWires are color coded to match you new aftermarket radio - Carxtc wiring makes your installation quicker No need to tap or cut into factory harness Match color wire to same color on new radio harness Plugs into car harness and then other end into new radio. Fits NISSAN QUEST 2011 to 2013 Non Bose, Non Nav 11 12 13 2011 2012 2013