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MERCURY GRAND MARQUIS
MODEL YEAR(S
GRAND MARQUIS 2005
KEY T-HARNESS IMMOBILIZER
FDKEY-6 N/A FORD'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT RED (+) and LIGHT GREEN/PURPLE (+) @ IGNITION SWITCH HARNESS
STARTER DARK GREEN (+) @ IGNITION SWITCH HARNESS
STARTER 2 N/A
IGNITION 1 PURPLE/ORANGE (+) @ IGNITION SWITCH HARNESS
IGNITION 2 WHITE/LIGHT BLUE (+) @ IGNITION SWITCH HARNESS
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 GRAY/YELLOW (+) @ IGNITION SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 WHITE/PURPLE (+) @ IGNITION SWITCH HARNESS
KEYSENSE N/A
PARKING LIGHTS ( - ) WHITE/BLACK (-) @ LCM, GRAY 16 PIN Plug, Pin 13, See NOTE #2
PARKING LIGHTS ( + ) BROWN (+) @ LCM, BLACK 16 Plug, Pin 4, See NOTE #2
POWER LOCK PINK/YELLOW (TYPE C), See NOTE #3 IN DRIVERS DOOR HARNESS
POWER UNLOCK PINK/LIGHT GREEN (TYPE C), See NOTE #3 IN DRIVERS DOOR HARNESS
LOCK MOTOR WIRE N/A
DOOR TRIGGER DARK BLUE (-) and BLACK/ORANGE (-) Use both, See NOTE #5 @ LCM Module, See NOTE #2 14301_GRAND-MARQUIS_(-) NEGATIVE DOOR PIN ISOLATION CIRCUIT.pdf
DOMELIGHT SUPERVISION BLACK/LIGHT BLUE (+) @ LCM Module, See NOTE #2
TRUNK RELEASE PURPLE/YELLOW (5-Wire), See NOTE #4 IN DRIVERS DOOR HARNESS 2963_GRAND-MARQUIS_FORD 5-WIRE TRUNK RELEASE DIAGRAM.pdf
SLIDING POWER DOOR N/A
HORN DARK BLUE (-) @ LCM, GRAY 22 Pin Plug, Pin 4, See NOTE #2
TACH Any wire that is NOT RED or RED/LIGHT GREEN (AC) @ IGNITION COIL or FUEL INJECTOR
WAIT TO START LIGHT N/A
BRAKE LIGHT GREEN (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM N/A
ANTI-THEFT FORD'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1 @ IGNITION SWITCH TUMBLER
NOTES
NOTE #1: This vehicle is equipped with a Special Anti-theft key, to remote start you will

need a Bypass module 791, use this module IF you have a extra ignition key to

place inside the 791 to remote start, if you do not have an extra key to use or wish

not to have a key placed inside this bypass module, we OFFER a KEYLESS INTERFACE

BYPASS MODULE that does not require a key to be placed inside the bypass module,

this is Part # PKALL or PKFM, either one will work, to order, go to the INTERFACE

BYPASS MODULE PAGE on this website.









NOTE #2: the LCM (Lighting Control Module) is located to the right of the steering column.

You can get to the harness of the LCM between the steering column and the

LCM Module.





NOTE #3: If vehicle is equipped with a FACTORY KEYLESS ENTRY System, then the vehicle has

a TYPE A (+) Door Locking System, vehicles without FACTORY KEYLESS ENTRY, have a

TYPE C Door Locking System. Vehicles with the KEY PAD on the Door are considered

to have KEYLESS ENTRY.





NOTE #4: this vehicle uses a 5-wire TRUNK Release System, that requires an extra relay

part #775, to connect, See DIAGRAM





NOTE #5: when connecting to an ALARM SYSTEM, use both DOOR TRIGGER wires and DIODE

ISOLATE, to connect, See DIAGRAM





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