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1998 GMC Sonoma Alarm Wiring Diagram

1998 GMC Sonoma Alarm Wires

Find the right alarm wire colors, locations, and polarity with this 1998 GMC Sonoma alarm wiring diagram. This will help you install your car alarm wiring correctly.

Application Wire Color and Location
Battery Constant 12v+ Positive Wire (+) Red
Battery Constant 12v+ Positive Wire Location Ignition Switch Harness
Starter Positive Wire (+) Yellow
Starter Positive Wire Location Ignition Switch Harness
Second Starter Positive Wire (+) N/A
Second Starter Positive Wire Location N/A
Ignition Positive Wire (+) Pink
Ignition Positive Wire Location Ignition Switch Harness
Second Ignition Positive Wire (+) White (This wire must be connected as ignition #2 for remote starting.)
Second Ignition Positive Wire Location Ignition Switch Harness
Third Ignition Positive Wire (+) N/A
Third Ignition Positive Wire Location N/A
Accessory Positive Wire (+) Orange
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

1998 GMC Sonoma Alarm Sensor Wires

Find the right alarm sensor wire colors, locations, and polarity with this 1998 GMC Sonoma alarm sensor wire chart. This will help you connect all your car alarm sensors correctly.

Application Wire Color and Location
Parking Light Negative Wire (-) White
Parking Light Negative Wire Location At BCM, Light Blue Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Parking Light Positive Wire (+) Brown
Parking Light Positive Wire Location At Headlight Switch Or At BCM, Light Blue Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Power Door Lock Positive Wire (+) Light Blue
Power Door Lock Positive Wire Location At BCM, Brown Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Power Door Unlock Positive Wire (+) White
Power Door Unlock Positive Wire Location At BCM, Brown Plug. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Door Trigger Negative Wire (-) This vehicle has (2) door trigger wires, the tan (-) at the purple plug, pin b4 is for the driver door, and the orange (-) at the purple plug, pin b2 is for the passenger door. When installing an alarm system use both door trigger wires and diode isolate.
Door Trigger Negative Wire Location At BCM. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Dome Light Supervision Wire (-) Tan
Dome Light Supervision Wire Location At BCM, Purple Plug, Pin B4. The BCM (body control module) is located to the right of the gas pedal just below the radio, the plugs on the BCM face the driver side of the vehicle.
Trunk Release Negative Wire (-) N/A
Trunk Release Negative Wire Location N/A
Sliding Power Door Wire N/A
Sliding Power Door Wire Location N/A
Horn Negative Wire (-) Black
Horn Negative Wire Location At Steering Column Harness
Tachometer Wire Negative Wire (-) White
Tachometer Wire Negative Wire Location At PCM. The PCM (powertrain control module) is located on the passenger fender. On the 2.2L engine, the white tachometer wire is in a 80-pin black plug (pin 10) and on the 4.3L engine the tachometer wire is in a red 32-pin plug (pin 20).
Wait To Start Wire N/A
Wait To Start Location N/A
Brake Light Positive Wire (+) White
Brake Light Positive Wire Location At Steering Column Harness
Factory Alarm Disarm Wire (-) N/A
Factory Alarm Disarm Wire Location N/A
Factory Anti-Theft System Yellow (+), Orange/Black (-) And Red/White (Not Used)
Factory Anti-Theft System Location GM Passlock 2 System, These Wires Exit The Ignition Switch Tumbler Together And Are In The Main Ignition Switch Harness In The Column.

Feel free to use any 1998 GMC Sonoma alarm wiring diagram that is listed here but keep in mind that all information here is provided as is without any warranty of any kind. Use of this 1998 GMC Sonoma car alarm wire chart is at your own risk. Always verify all wires, wire colors and connection points before applying any information found here to your 1998 GMC Sonoma.

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