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My harness has a 4 pin square connector but the speed sensor has a 3 pin flat connector. What's going on?
If the transmission was changed in your car, you may have lost the extension harness in which you'll need a our replacement VSS sub harness to get the connector to reach the transmission.
Turbo models (except STi) come from the factory with a 4 pin connector off the body harness. The factory extension harness converts that 4 pin to a 3 pin connector at the transmission.
Non turbo models and STi models use the same 3 pin flat connector that goes to the sensor on the body harness.
Fitment Notes:
This is not a solution for an auto to manual conversion
| Year Fitments | Subaru WRX | Subaru STI | Forester XT |
|---|---|---|---|
| 2002 | ✓ | ||
| 2003 | ✓ | ||
| 2004 | ✓ | ✓ | ✓ |
| 2005 | ✓ | ✓ | ✓ |
| 2006 | ✓ | ✓ | ✓ |
| 2007 | ✓ | ✓ | ✓ |
| 2008 | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | iWire Vehicle Speed Sensor Replacement Sub Harness |
|---|---|
| Brand | I-Wire |






