PRINT
MERCURY GRAND MARQUIS
MODEL YEAR(S
GRAND MARQUIS 1987-1989
KEY T-HARNESS IMMOBILIZER
N/A N/A N/A
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT YELLOW (+) @ IGNITION SWITCH HARNESS
STARTER WHITE/PINK (+) @ IGNITION SWITCH HARNESS
STARTER 2 N/A
IGNITION 1 RED/LIGHT GREEN (+) @ IGNITION SWITCH HARNESS
IGNITION 2 BLACK/GREEN (+) @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 GRAY/YELLOW (+), See NOTE #1 @ IGNITION SWITCH HARNESS 17836_GRAND-MARQUIS_FORDS HIGH CURRENT ACCESSORY CONNECTION.pdf
ACCESSORY/HEATER BLOWER 2 N/A
KEYSENSE N/A
PARKING LIGHTS ( - ) N/A
PARKING LIGHTS ( + ) BROWN (+) IN DRIVERS KICK PANEL
POWER LOCK PINK/YELLOW (TYPE C) IN PASSENGER KICK PANEL
POWER UNLOCK PINK/LIGHT GREEN (TYPE C) IN PASSENGER KICK PANEL
LOCK MOTOR WIRE N/A
DOOR TRIGGER BLACK/BLUE (+) IN DRIVERS KICK PANEL
DOMELIGHT SUPERVISION USE DOOR TRIGGER
TRUNK RELEASE PURPLE/YELLOW (+) @ TRUNK RELEASE SWITCH
SLIDING POWER DOOR N/A
HORN YELLOW/LIGHT GREEN (-) @ STEERING COLUMN HARNESS
TACH GREEN/YELLOW (AC) @ IGNITION COIL
WAIT TO START LIGHT N/A
BRAKE GREEN/ORANGE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM N/A
ANTI-THEFT N/A
NOTES
NOTE #1: this is a HIGH CURRENT ACCESSORY wire that needs to be controlled by a off-board

external relay PART #775, to connect, See DIAGRAM.
LINK 1 LINK TEXT 1 LINK 2 LINK TEXT 2