Whether your an expert installer or a novice enthusiast with a 1999 Pontiac Grand Prix, 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 1999 Pontiac Grand Prix.

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 1999 Pontiac Grand Prix.

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.

1999 Pontiac Grand Prix Car Alarm and Remote Car Starter Wiring Information

Constant 12V+ Wire: Red
Constant 12V+ Wire Location: Ignition Switch Harness

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

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

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

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

Accessory Wire: Orange
Accessory Wire Location: Ignition Switch Harness

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

Tachometer Wire: N/A
Tachometer Wire Location: N/A

Door Lock Wire (-): Light Blue
Door Lock Wire Location: Driver Kick Panel

Door Unlock Wire (-): White
Door Unlock Wire Location: Driver Kick Panel

Door Trigger Wire (-): Tan and Dark Blue
Door Trigger Wire Location: The tan is located in the drivers kick and catches only the drivers door. The dark/blue is located in the passenger kick panel and catches all other doors, must diode isolate these wires.

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

Headlights Wire (+): Yellow
Headlights Wire Location: Headlight Switch

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

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

Trunk/Hatch Pin Wire (-): Red/Black
Trunk/Hatch Pin Wire Location: Under Rear Deck

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

Trunk/Hatch Release Wire (-): Black/White
Trunk/Hatch Release Wire Location: At Trunk Release Switch

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

Factory Alarm Disarm Wire (-): Orange/Black
Factory Alarm Disarm Wire Location: Driver Kick Panel

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

Horn Trigger Wire (-): Black
Horn Trigger Wire Location: Steering Column

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

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