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2004 Chevrolet Trailblazer Security Wiring Diagram

2004 Chevrolet Trailblazer Alarm Wires

Find the right alarm wire colors, locations, and polarity with this 2004 Chevrolet Trailblazer 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 N/A
Second Starter Positive Wire (+) N/A
Second Starter Positive Wire Location Ignition Switch Harness
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 (+) Brown (On 2004 models, you will need to use the accessory 2 wire and the accessory 1 wire when remote starting.)
Second Accessory Positive Wire Location Ignition Switch Harness
Key Sense Wire (-) Light Green
Key Sense Wire Location Ignition Switch Harness

2004 Chevrolet Trailblazer Alarm Sensor Wires

Find the right alarm sensor wire colors, locations, and polarity with this 2004 Chevrolet Trailblazer alarm sensor wire chart. This will help you connect all your car alarm sensors correctly.

Application Wire Color and Location
Parking Light Negative Wire (-) Gray/Black
Parking Light Negative Wire Location At Headlight Switch or Pin E5 in Tan Plug at BCM Module. The BCM (body control module) is attached to the Fuse Box under the left rear seat.
Parking Light Positive Wire (+) Brown
Parking Light Positive Wire Location In Drivers Kick Panel
Power Door Lock Negative Wire (-) This vehicle will requires a anti-theft bypass module to connect the door locks and bypass the Passlock 2 system. If not connecting up the door locks use a bypass module.
Power Door Lock Negative Wire Location N/A
Power Door Unlock Negative Wire (-) This vehicle will requires a anti-theft bypass module to connect the door locks and bypass the Passlock 2 system. If not connecting up the door locks use a bypass module.
Power Door Unlock Negative Wire Location N/A
Door Trigger Negative Wire (-) Gray/Black
Door Trigger Negative Wire Location At Under Dash Light
Dome Light Supervision Wire (-) Turns On With Disarm
Dome Light Supervision Wire Location N/A
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 Or Black/Yellow
Horn Negative Wire Location At Steering Column Harness
Tachometer Wire Negative Wire (-) White
Tachometer Wire Negative Wire Location Pin 49 in Blue Plug At PCM Module. The PCM (power control module) is located on the driver side of the engine.
Wait To Start Wire N/A
Wait To Start Location N/A
Brake Light Positive Wire (+) N/A
Brake Light Positive Wire Location N/A
Factory Alarm Disarm Wire (-) N/A
Factory Alarm Disarm Wire Location N/A
Factory Anti-Theft System N/A
Factory Anti-Theft System Location N/A

Feel free to use any 2004 Chevrolet Trailblazer 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 2004 Chevrolet Trailblazer 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 2004 Chevrolet Trailblazer.

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