Car Alarm Wiring Diagram and Car Wire Schematics – 2003 Infiniti FX45

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Whether your an expert installer or a novice enthusiast with a 2003 Infiniti FX45, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car alarm, remote car starter, car security system or any mobile electronics is identifying the correct wires for a 2003 Infiniti FX45.

The Modified Life staff has put their heads together to create an invaluable resource containing car alarm wiring diagram, remote car starter wiring diagram, car wiring diagram and car security wiring diagram. Feel free to use any car alarm wiring diagram or remote car starter wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Infiniti FX45.

If you can’t find your car alarm wiring diagram or remote start wire diagram on Modified Life, please feel free to post a car wiring diagram request (Car Alarm Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation.

2003 Infiniti FX45 Car Alarm and Remote Car Starter Wiring Information

Constant 12V+ Wire: Blue/Red to Red
Constant 12V+ Wire Location: Ignition Switch Harness

Starter Wire (+): Blue
Starter Wire Location: Ignition Switch Harness

Second Starter Wire (+): Pink
Start Wire Location: Ignition Switch Harness

Ignition Wire (+): Black
Ignition Wire Location: Ignition Switch Harness

Second Ignition Wire: N/A
Second Ignition Wire Location: N/A

Accessory Wire: White
Accessory Wire Location: Ignition Switch Harness

Second Accessory Wire: N/A
Accessory Wire Location: N/A

Key Sense Wire: Black/White (required for remote start)
Key Sense Location: Ignition Switch Harness or BCM, White Plug with 40 pins, pin 37. The BCM (Body Control Module) is in the driver kick panel.

Tachometer Wire: NOT white or black
Tachometer Wire Location: Any fuel injector.

Door Lock Wire (-): Pink
Door Lock Wire Location: Driver door module in door. Meter this wire while turning the key in the driver door key cylinder.

Door Unlock Wire (-): Orange (double pulse)
Door Unlock Wire Location: Driver door module in door. Meter this wire while turning the key in the driver door key cylinder.

Door Trigger Wire (-): The driver side door triggers are in the white 15 pin plug. The driver door is white in pin 62, and the driver rear door is pink in pin 63. The passenger side door triggers are in the white 40 pin plug. The front passenger door is pink/black in pin 12, and the rear passenger door is pink/blue in pin 13. Use all four wires and diode isolate each.
Door Trigger Wire Location: BCM. The BCM (Body Control Module) is in the driver kick panel.

Dome Supervision Wire: Purple/White
Dome Supervision Wire Location: BCM, black plug, pin 48. The BCM (Body Control Module) is in the driver kick panel.

Headlights Wire (-): N/A
Headlights Wire Location: N/A

Parking Light Positive Wire (+): Red to White
Parking Light Positive Wire Location: White 16 pin plug above driver kick panel.

Parking Light Negative Wire (-): N/A
Parking Light Negative Wire Location: N/A

Trunk/Hatch Pin Wire (-): Blue
Trunk/Hatch Pin Wire Location: White 15 pin plug at BCM, pin 58. The BCM (Body Control Module) is in the driver kick panel.

Hood Pin Wire (-): Light Green
Hood Pin Wire Location: Hood Pin Switch

Trunk/Hatch Release Wire (-): N/A
Trunk/Hatch Release Wire Location: N/A

Factory Alarm Arm Wire: Arms with lock.
Factory Alarm Arm Wire Location: N/A

Factory Alarm Disarm Wire (-): Disarms with unlock.
Factory Alarm Disarm Wire Location: N/A

Factory Alarm Disarm but No Unlock Wire (-): Disarms with remote start.
Factory Alarm Disarm Wire Location: N/A

Horn Trigger Wire (-): Green/Black to Light Blue
Horn Trigger Wire Location: Horn Switch in steering column.

Brake Wire (+): Pink
Brake Wire Location: Brake Pedal Switch

Emergency Parking Brake Wire (+): Blue to Purple/White
Emergency Parking Brake Wire Location: Parking Brake Switch

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