2003 Chevrolet Astro Alarm Wires
Find the right alarm wire colors, locations, and polarity with this 2003 Chevrolet Astro alarm wiring diagram. This will help you install your car alarm wiring correctly.
| Application | Wire Color and Location |
|---|---|
| Battery Constant 12v+ Positive Wire (+) | Red and Red/White |
| Battery Constant 12v+ Positive Wire Location | Ignition Switch Harness |
| Starter Positive Wire (+) | Yellow |
| 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 |
| Accessory Positive Wire (+) | Orange |
| Accessory Positive Wire Location | Ignition Switch Harness |
| Second Accessory Positive Wire (+) | Brown |
| Second Accessory Positive Wire Location | Ignition Switch Harness |
2003 Chevrolet Astro Alarm Sensor Wires
Find the right alarm sensor wire colors, locations, and polarity with this 2003 Chevrolet Astro alarm sensor wire chart. This will help you connect all your car alarm sensors correctly.
| Application | Wire Color and Location |
|---|---|
| Parking Light Positive Wire (+) | Brown |
| Parking Light Positive Wire Location | In Drivers Kick Panel Or BCM, Light Blue Plug, Pin B6. The BCM is located above the climate controls in the center of the dash. |
| Power Door Lock Positive Wire (+) | Light Blue |
| Power Door Lock Positive Wire Location | In Driver Kick Panel |
| Power Door Unlock Positive Wire (+) | White |
| Power Door Unlock Positive Wire Location | In Drivers Kick Panel |
| Door Trigger Negative Wire (-) | The drivers door is a blue (-) purple plug, pin B4, the passengers door is a orange (-) purple plug, pin B2 and the sliding door is a pink (-) light blue plug, pin B10, the rear door is a yellow (-) light blue plug, pin B11. When connecting to an alarm system, use all 4 wires and diode isolate. |
| Door Trigger Negative Wire Location | At BCM. The BCM is located above the climate controls in the center of the dash. |
| Dome Light Supervision Wire (-) | Gray/Black |
| Dome Light Supervision Wire Location | At Relay Above Diagnostic Plug |
| Trunk Release Negative Wire (-) | Light Blue |
| Trunk Release Negative Wire Location | At Relay Above Diagnostic Plug |
| Horn Negative Wire (-) | Black |
| Horn Negative Wire Location | At Steering Column Harness Or BCM, Brown Plug, Pin A9. The BCM is located above the climate controls in the center of the dash. |
| Tachometer Wire Negative Wire (-) | White |
| Tachometer Wire Negative Wire Location | At PCM, Green Plug Pin 26. The PCM is located below the Battery under the hood. |
| Brake Light Positive Wire (+) | White |
| Brake Light Positive Wire Location | At Switch Above Brake Pedal |
| 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 2003 Chevrolet Astro 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 2003 Chevrolet Astro 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 2003 Chevrolet Astro.
2 thoughts on “2003 Chevrolet Astro Car Security Wire Chart”
Ed, as much as we would like to help you, not all car alarms
are installed the same way. Different brands and different setups will call for different wiring. Our advice is to take your 2003 Chevrolet Astro to a qualified alarm installer and ask them to remove the alarm because it does take some wiring knowledge and experience to know what to remove. Hope this helps. Good luck on your alarm removal.
How can I disable the anti theft system on a 2003 Astro van? Can it be disabled and still operate the van as normal?