Using the K - Tuned All - In - One VSS Converter is straightforward. First, wire it into the engine harness near the ECU inside your car. Just connect the four wires: power, ground, speed signal input, and speed signal output. To adjust the speed correction, connect the converter to a Windows computer or laptop via the USB harness and open the downloaded application. You can then select from the three settings according to your needs. For the RSX and S2K settings, remember they are preset for cars with 23” tall tires but can be further adjusted. When making adjustments, go slowly and check the speedometer accuracy. Keep the converter away from water and extreme temperatures to maintain its performance. If you encounter any issues during installation or programming, refer to the detailed instructions included with the product.