Jaguar XKR I facelift (2004-2006) Headlamps leveling circuit

1 2 5 7 4 2 BAT PWM SERIAL 7 4 BAT PWM BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM ENGINE COMPARTMENT FUSE BOX (AT LEFT FRONT OF ENG COMPT) FRONT AXLE RIDE HEIGHT SENSOR FUSE 3 HEADLAMP LEVELING CONTROL MODULE HOT IN RUN, START INPUT LEFT FRONT LAMP UNIT ORG/ WIRE OUTPUT REAR AXLE RIDE HEIGHT SENSOR RIGHT FRONT LAMP UNIT SERIAL STEPPER MOTOR, ACTUATOR WHT WIRE WHT/RED WIRE YEL WIRE