Fits 1999 - 2005 Mazda Miata Race cooling fans GPS Automatic Adjust Prewired Controller Type 45 amp electric motor unit features a low 9 amp draw Steering wheel and column not included Requires cutting HOW IT WORKS: The computer measures the amount of effort on the steering wheel and amplifies it with the aid of the electric motor. An ADJUSTABLE POTENTIOMETER gives you control over the amount of assistance provided, allowing you to fine tune your EPAS experience. For example, you can have maximum power assist while on a parking lot, and less on the highway. The system is only active while turning. The GPS AUTO ADJUST option will do the same thing automatically based on your vehicles speed.