Whether your an expert Mercury Cougar car alarm installer, Mercury Cougar performance fan or a novice Mercury Cougar enthusiast with a 1999 Mercury Cougar, a 1999 Mercury Cougar 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 Mercury Cougar.

The Modified Life staff has taken all its Mercury Cougar car alarm wiring diagrams, Mercury Cougar car security wiring diagrams, Mercury Cougar car alarm wire diagrams, Mercury Cougar car security wiring schematics, Mercury Cougar car security diagrams, Mercury Cougar 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 Mercury Cougar 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 Mercury Cougar.

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1999 Mercury Cougar Auto Alarm Wiring Schematic

Battery Constant 12v+ Positive Wire (+): Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

Starter Positive Wire (+): Gray/White
Starter Positive Wire Location: Ignition Switch Harness

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

Ignition Positive Wire (+): Green
Ignition Positive Wire Location: Ignition Switch Harness

Second Ignition Positive Wire (+): N/A
Second Ignition Positive Wire Location: N/A

Third Ignition Positive Wire (+): N/A
Third Ignition Positive Wire Location: N/A

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

Second Accessory Positive Wire (+): N/A
Second Accessory Positive Wire Location: N/A

Key Sense Wire: N/A
Key Sense Wire Location: N/A

Parking Light Negative Wire (-): Black/Yellow
Parking Light Negative Wire Location: At Keyless Entry Module. The factory keyless entry module is located behind the glove box, this wire flashes the hazard lights.

Parking Light Positive Wire (+): Red/Blue And Red/Yellow (Use Both). These wires must be isolated with 2 relays, so that the headlights do not operate with the parking lights.
Parking Light Positive Wire Location: At Headlight Switch, See Diagram

Power Door Lock Negative Wire (-): Yellow/Green
Power Door Lock Negative Wire Location: In Drivers Kick Panel

Power Door Unlock Negative Wire (-): White/Green
Power Door Unlock Negative Wire Location: In Drivers Kick Panel

Door Trigger Negative Wire (-): Black/Red And Black/Green (Use Both). The black/red (-) is for the drivers door, and the black/green (-) is for the passenger door, when connecting to an alarm system us both wires and diode isolate. For dome light supervision use the black/red (-) is for the drivers door. To get to these wires, pull the fuse panel down and remove the cover.
Door Trigger Negative Wire Location: At Top Of Fusebox

Dome Light Supervision Wire (-): Black/Blue (Requires Relay)
Dome Light Supervision Wire Location: At Driver A Pillar

Trunk Release Negative Wire (-): Black/Yellow (Requires Relay)
Trunk Release Negative Wire Location: At Trunk Release Switch Or In Drivers Kick Panel

Sliding Power Door Wire: N/A
Sliding Power Door Wire Location: N/A

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

Tachometer Wire Negative Wire (-): Brown/Green
Tachometer Wire Negative Wire Location: At Ignition Coil Pack

Wait To Start Wire: N/A
Wait To Start Location: N/A

Brake Light Positive Wire (+): Orange/Blue
Brake Light Positive Wire Location: At Switch Above Brake Pedal

Factory Alarm Disarm Wire (-): Black/White
Factory Alarm Disarm Wire Location: In Drivers Kick Panel

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

The 1999 Mercury Cougar alarm wire color information above is updated as it is submitted by the Modified Life community.

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