2003 Ford Explorer Car Alarm Wiring Diagram

Whether your an expert installer or a novice enthusiast with a 2003 Ford Explorer, 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 Ford Explorer.

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 and most diagrams listed on our site are submitted by our Modified Life community. 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 Ford Explorer.

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2003 Ford Explorer Car Alarm Wiring Diagram Information

Constant 12V+ Wire: Yellow
Constant 12V+ Wire Location: Ignition Switch Large Harness

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

Second Starter Wire (+): N/A
Start Wire Location: N/A

Ignition Wire (+): Red/Light Green
Ignition Wire Location: Ignition Switch Harness

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

Accessory Wire: Green/Light Green
Accessory Wire Location: Ignition Switch Harness

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

Key Sense Wire (+): N/A
Key Sense Location: N/A

Tachometer Wire: For tach, go to one of the ignition coils or coil pack and use the wire that is NOT White/Light Blue.
Tachometer Wire Location: Ignition Coil or Coil Pack.

Door Lock Wire (-): Pink/Yellow
Door Lock Wire Location: Driver Kick Panel or CSM. The CSM (Central Security Module) is in the passenger side “C” pillar.

Door Unlock Wire (-): Pink/Light Green
Door Unlock Wire Location: Driver Kick Panel or CSM. The GEM in this vehicle shuts down after the doors have been locked for a certain time period.

Door Trigger Wire (-): Black/Light Blue
Door Trigger Wire Location: Driver Kick Panel

Dome Supervision Wire: Use Door Trigger
Dome Supervision Wire Location: N/A

Headlights Wire (-): Red/Yellow
Headlights Wire Location: Headlight Switch

Parking Light Positive Wire (+): Brown
Parking Light Positive Wire Location: Headlight Switch or Driver Kick Panel

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

Trunk/Hatch Pin Trigger Wire (-): Tied in with the doors.
Trunk/Hatch Pin Trigger Wire Location: N/A

Hood Pin Trigger Wire (-): N/A
Hood Pin Trigger Wire Location: N/A

Trunk/Hatch Release Wire (+): Orange/Light Green
Trunk/Hatch Release Wire Location: Central Security Module. The CSM (Central Security Module) is in the passenger side “C” pillar.

Factory Alarm Arm Wire: N/A
Factory Alarm Arm Wire Location: N/A

Factory Alarm Disarm Wire (-): Green/Purple
Factory Alarm Disarm Wire Location: Driver Door Harness or CSM. The CSM (Central Security Module) is in the passenger side “C” pillar.

Factory Alarm Disarm but No Unlock Wire (-): N/A
Factory Alarm Disarm Wire Location: N/A

Horn Trigger Wire (-): Yellow/Light Green
Horn Trigger Wire Location: Steering Column or CSM. The CSM (Central Security Module) is in the passenger side “C” pillar.

Brake Wire (+): Tan/Red to Light Green
Brake Wire Location: Brake Pedal Switch

Emergency Parking Brake Wire (-): N/A
Emergency Parking Brake Wire Location: N/A

Make Your Car Alarm Installation Easy with these Tools and Accessories

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