1999 Ford Expedition Car Security Wiring Schematic

1999 Ford Expedition Car Security Wiring Schematic

Whether your an expert Ford Expedition car alarm installer, Ford Expedition performance fan or a novice Ford Expedition enthusiast with a 1999 Ford Expedition, a Ford Expedition car alarm wiring diagram can save yourself a lot of time. One of the most time consuming tasks with installing an after market car alarm, car security, car remote start, automatic remote starter, shock sensor, tilt sensor, car alarm sensor or any auto alarm is identifying the correct color car security wires for a 1999 Ford Expedition.

The Modified Life staff has taken all its 1999 Ford Expedition car alarm wiring diagrams, 1999 Ford Expedition car security wiring diagrams, 1999 Ford Expedition car alarm wire diagrams, 1999 Ford Expedition car security wiring schematics, 1999 Ford Expedition car security diagrams, Ford Expedition remote starter wiring diagrams and cataloged them online for our visitors to use for free. Our automotive wiring diagrams allow you to enjoy your new auto security electronics rather than spend countless hours trying to figure out which wires goes where.

Feel free to use any 1999 Ford Expedition auto alarm 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 of the auto security wiring diagrams listed on our enthusiast website are submitted by the 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 1999 Ford Expedition.

Questions

If you have any questions pertaining to the car wiring in a 1999 Ford Expedition, please feel free to post it at the bottom of this page and either we will do our best to find you the information you need or hopefully someone in the Modified Life community will have the information youre looking for.

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Adding More Information

If you would like to help the Modified Life community by adding a car security wire schematic, car alarm wire diagram, car remote starter wire diagram, auto remote starter wire diagram or auto security wire diagram to our resource, please feel free to post any additional car wiring information about the 1999 Ford Expedition on this page.

1999 Ford Expedition Car Security Wiring Schematic

Battery Constant 12v+ Positive Wire (+): Yellow and Light Green/Purple
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Red/Light Blue
Starter Positive Wire Location: Ignition Switch Harness

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

Second Ignition Positive Wire (+): Red/Black
Second Ignition Positive Wire Location: Ignition Switch Harness

Accessory Positive Wire (+): Grey/Yellow
Accessory Positive Wire Location: Ignition Switch Harness

Second Accessory Positive Wire (+): Black/Light Green
Second Accessory Positive Wire Location: Ignition Switch Harness

Parking Light Positive Wire (+): Brown
Parking Light Positive Wire Location: At Headlight Switch

Power Door Lock Negative Wire (-): Pink/Yellow
Power Door Lock Negative Wire Location: At Keyless Entry Module. The keyless entry module is located high in the drivers kick panel against the firewall.

Power Door Unlock Negative Wire (-): Pink/Light Green
Power Door Unlock Negative Wire Location: At Keyless Entry Module. The keyless entry module is located high in the drivers kick panel against the firewall.

Door Trigger Negative Wire (-): Light Blue/White (The light blue/white wire is in pin-11, next to the black/pink wire. Test this wire with a digital multi-meter only, as to not damage the circuit.)
Door Trigger Negative Wire Location: At Keyless Entry Module. The keyless entry module is located high in the drivers kick panel against the firewall.

Domelight Supervision Wire (+): Black/Light Blue (Requires Relay)
Domelight Supervision Wire Location: In Passenger Kick Panel

Horn Negative Wire (-): Dark Blue
Horn Negative Wire Location: At Steering Column Harness

Tachometer Wire Negative Wire (-): The tach wire on the 4.6L engine is a pink/white in a 3-pin plug at the front of the engine below the air intake. On the 5.4L engine the tach wire is a light green/white at the coil on the passenger side of the engine.
Tachometer Wire Negative Wire Location: At the firewall on the drivers side you will find (3) wire harnesses, the tach wire will be located in the upper wire harness.

Brake Light Positive Wire (+): Light Green
Brake Light Positive Wire Location: At Switch Above Brake Pedal

Factory Alarm Disarm Wire (-): N/A
Factory Alarm Disarm Wire Location: N/A

Factory Anti-Theft System: Ford’s Pats Anti-Theft Transponder System
Factory Anti-Theft System Location: Transponder At Ignition Switch Tumbler

8 Replies to “1999 Ford Expedition Car Security Wiring Schematic”

  1. can somebody help me ? i’,m installing an alarm on a 1998 expedition, and the car starts with remote starter, theft light comes on and goes off like if it was started with the key, but after a few minutes theres a loud beeping noise coming from like under the car. anybody knows what this noise is?

  2. Im looking for a 1998 Ford expedition car alarm wiring diagram. If yall could get one and send it to me that would be great. Ive been working on my alarm off and on for about a month now.. Thanks MG

  3. My comment is more of a question. My 99 expedition turns over but will not start. We towed it to a locksmith who said the key WAS coded and not our problem. Could the problem be the security system? and if so, do you know how to dis arm it? We have tried every wire in the whole harness and can’t figure it out. Please help if you can. Thanks, Mary.

  4. Mary, if your 1999 Ford Expedition does not crank then it could be that the key is not coded correctly or the alarm system is preventing you from starting the car. If your 1999 Ford Expedition cranks but the car does not stay running then it may be your vehicle computer or something mechanical. It would be hard to really pin point exactly what the problem is. Our advice is to take your car to an knowledgeable mechanic and have him troubleshoot it. Hope this helps. Good luck with your problem.

  5. I lost my chip out of my one and only key i own for my 1999 Ford Expedition. I had one made with the chip in it how do i program it? Or how do i disconnect the factory anti theft system dont care about security as longs as i can drive my kids to the doctor if needed. thank you for your time

  6. Joe, unfortunately, you can only program your 1999 Ford Expedition key at the Ford dealer. Take your new key to your local Ford dealer and have them program your key to your factory computer. Hope this helps. Good luck with programming your 1999 Ford Expedition key.

  7. Where is the hood pin switch in a 1999 Ford Expedition? I don’t measure any voltage coming from the blue/white wire (11th pin next to the black/pink wire in the Keyless Entry Module high in the driver’s kick panel) whether the hood is opened or closed. Anyone?

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