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BMW 3 SERIES
MODEL YEAR(S
3 SERIES 1987-1991
KEY T-HARNESS IMMOBILIZER
N/A N/A N/A
PART COLOR LOCATION DIAGRAM
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 8921_3-SERIES_DUAL PARKING LIGHT DIAGRAM.pdf
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
LOCK MOTOR WIRE N/A
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
NOTES
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!!!!!
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