Bmw  3 Series 1987-1991
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ IGNITION SWITCH HARNESS
 STARTER  BLACK/YELLOW (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  GREEN (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  PURPLE (+)  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  N/A  
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  N/A  
 PARKING LIGHTS ( + )  GRAY/WHITE (+) and GRAY/YELLOW (+) Use both wires, See NOTE #1  @ HEADLIGHT SWITCH, See DIAGRAM
 POWER LOCK  YELLOW/BLUE (TYPE B)  IN DRIVER KICK PANEL, See NOTE #2
 POWER UNLOCK  GREEN/BLUE (TYPE B)  IN DRIVER KICK PANEL, See NOTE #2
 DOOR TRIGGER  BROWN/PURPLE (-)  IN DRIVER KICK PANEL
 DOMELIGHT SUPERVISION  USE DOOR TRIGGER, (Requires #775 Relay for DOMELIGHT SUPERVISION)  
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BROWN/YELLOW (-)  @ STEERING COLUMN HARNESS
 TACH  BLACK (AC)  @ DIAGNSTIC CONNECTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  GREEN/RED (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  N/A  
 EXTRA INFORMATION
 NOTE #1: this vehicle has a DUAL PARKING LIGHT System that will require 2 extra Relays Part #775 to connect, See DIAGRAM NOTE #2: REMOVE DRIVER KICK PANEL SPEAKER, REMOVE THE TWO SCREWS TO PULL RELAYS. KEEP RELAY UPRIGHT SO THEY DON'T FILL WITH WATERLATER. THESE WIRES DON'T SHOW PULSE .RATHER , ONE WILL REST (-) AND THE OTHER WILL REST (+).REVERSING THE STATE OF THE LOCKS FLIP-FLOPS THE POLARITY OF THESE TWO WIRES. PUTTING A LOW CURRENT (-)TO THE (+)WIRE WILL OPERATE THE LOCKS . DO NOT OPERATE THE DOOR LOCKS WITH THE REMOTE IF YOU HAVE LOCKED THE VEHICLE WITH THE KEY IN THE DOOR KEY CYLINDER, DOING SO WILL DO DAMAGE TO THE DOOR LOCKING SYSTEM!!!!!