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CADILLAC SEVILLE
MODEL YEAR(S
SEVILLE 1998-2004
KEY T-HARNESS IMMOBILIZER
GMKEY-1 N/A GM's TRANSPONDER ANTI-THEFT System, See NOTE #1
PART COLOR LOCATION DIAGRAM
12 VOLT CONSTANT Connect to BATTERY ONLY
STARTER YELLOW (+) IGNITION SWITCH HARNESS See NOTE #6
STARTER 2 N/A
IGNITION 1 PINK (+) IGNITION SWITCH HARNESS See NOTE #6
IGNITION 2 WHITE (+) IGNITION SWITCH HARNESS See NOTE #6
IGNITION 3 N/A
ACCESSORY/HEATER BLOWER 1 ORANGE (+) IGNITION SWITCH HARNESS See NOTE #6
ACCESSORY/HEATER BLOWER 2 BROWN (+) IGNITION SWITCH HARNESS See NOTE #6
KEYSENSE N/A
PARKING LIGHTS ( - ) BROWN/WHITE (-) @ DIM, BLUG Plug, Pin B3 See NOTE *2
PARKING LIGHTS ( + ) N/A
POWER LOCK RED/BLACK (TYPE B) @ LOCK SWITCH in DRIVERS DOOR
POWER UNLOCK ORANGE/BLACK (TYPE B) @ LOCK SWITCH in DRIVERS DOOR
LOCK MOTOR WIRE GRAY (5-WIRE TYPE) @ DRIVERS DOOR MODULE in DOOR, BLACK 12-Pin Plug, Pin H
DOOR TRIGGER See NOTE #3 @ DOOR MODULES 4471_SEVILLE_(-) NEGATIVE DOOR PIN ISOLATION CIRCUIT.pdf
DOMELIGHT SUPERVISION GRAY (-), (Requires #775 Relay) @ UNDERDASH LIGHT
TRUNK RELEASE LIGHT BLUE (-) @ RIM, GRAY Plug, Pin B4, See NOTE #4
SLIDING POWER DOOR N/A
HORN BLACK (-) @ STEERING COLUMN HARNESS
TACH WHITE @ PCM, BLUE plug Pin 23, See NOTE #5
WAIT TO START LIGHT N/A
BRAKE WHITE (+) @ SWITCH ABOVE BRAKE PEDAL
FACTORY ALARM DISARM LIGHT GREEN (-) @ DRIVERS DOOR MODULE in DRIVERS DOOR
ANTI-THEFT GM's TRANSPONDER SYSTEM, See NOTE #1 @ IGNITION SWITCH TUMBLER
NOTES
NOTE #1: This vehicle is equipped with GM'S TRANSPONDER ANTI-THEFT SYSTEM and Requires

791 Bypass Module and an Extra Ignition Key for Remote starting operation.



to order go to the SECURITY BYPASS MODULE Page on this website.







NOTE #2: at DIM Module located under the PASSENGER side of dash, near the BLOWER MOTOR.







NOTE #3; the DRIVER DOOR wire is a TAN (-) at the DRIVERS DOOR module in the DRIVERS

DOOR and all other doors use a DARK BLUE (-) at the DOOR Module in each door.

When connecting to an Alarm System use all 4 wires and Diode Isolate. See DIAGRAM







NOTE #4: the RIM Module is located behind the PASSENGER SIDE REAR SEAT, in the lower corner.







NOTE #5: the PCM is located at the FRONT drivers side of engine compartment below the air cleaner.







NOTE #6: To gain access to ignition switch harness remove factory radio but DO NOT unplug it.
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