Ignition Interlock Device Intoxalock Wiring Diagram [best] Official

Despite having the wiring diagram in front of you, you are legally prohibited from installing an Intoxalock yourself in 49 states (excluding a few rural exemptions). Here is why:

While specific wire colors can vary slightly by model year and vehicle type (12V vs. 6V systems in older cars), most Intoxalock models follow a standardized color code. Below is the most common diagram. Ignition Interlock Device Intoxalock Wiring Diagram

| Wire Color | Standard Function | Connection Point in Vehicle | | :--- | :--- | :--- | | | Main Power (12V Constant) | Direct to Positive battery terminal or Constant power at ignition harness. | | Black | Chassis Ground | Bare metal frame ground (sand any paint off). | | Yellow | Ignition Switched Power (12V IGN) | Wire that receives 12V only when key is in "RUN" or "ACC" position. | | White | Starter Kill (Normally Closed) | Cut the vehicle's starter wire. Connect White to the Key Side of the cut. | | Green | Starter Kill (Normally Open) | Cut the vehicle's starter wire. Connect Green to the Starter Motor Side of the cut. | | Blue | Tach / Data Link (Optional) | Connects to negative side of ignition coil (gas) or Glow plug light (diesel). | Despite having the wiring diagram in front of

Here is a simplified schematic of the starter kill path: Below is the most common diagram

is strongly recommended to ensure compliance with state laws and avoid vehicle damage, the system typically utilizes a specific harness and color-coded wiring scheme. Intoxalock Typical Wiring Color Codes & Harness Connections

Chassis ground; must be connected to a solid, verified ground point. Ignition & Starter Control: Green (Key On):

The most complex part of the is the starter relay integration. You are inserting the IID between the ignition switch and the starter solenoid.