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 CHRYSLER 300M 1999 to 2002 1999 2000 2001 2002 99 00 01 02