2002 bmw x5

12volts red    + ignition harness     Starter BLACK / YELLOW    +   ignition harness      Ignition lt. green    +   ignition harness      Power Lock blue/red    -   door module in driver door      Power Unlock WHITE/ black    -   door module in driver door      Lock Motor              Unlock Motor              Disarm Defeat              Parking Lights+ black      headlight switch     Parking Lights-              Hazards              Turn Signal(L)              Turn Signal(R)              Door Trigger BROWN / white    -   LF & RF door module in doors      Dome Supervision comes on with unlock            Trunk/Hatch Pin              Hood Pin PURPLE / green    -   at hood pin      Trunk/Hatch Release gray/brown    -   release switch      Power Sliding Door              Factory Alarm Arm arms with lock            Factory Alarm Disarm disarms with unlock            Disarm No Unlock              Tachometer Brake Wire blue/red    +   brake pedal switch These wires only work with the ignition on.            Horn Trigger BROWN / red    -   steering column These wires only work with the ignition on.     Use a relay to open the black wire to trigger the parking lights. On the 3.0L vehicles use black at the diagnostic plug on the driver strut tower. On the 4.4L go to any injector and use the wire that is NOT BROWN / red for tach. Good luck. The stereo is fairly straight forward no matter which factory system is in it. Someone pass me that bottle.