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Clocksprings generally consist of a flat multicore cable wound in a spiral shape similar to a clock spring, hence the name, but the name is also given to devices fulfilling the same purpose but which use spring-loaded brushes contacting concentric slip rings.
Video Clockspring
In Automotive Systems
In vehicle steering systems a clock spring or clockspring is a spiral-wound special rotary electrical connector which allows a vehicle's steering wheel to turn while still making an electrical connection between the steering wheel airbag and/or the vehicle's horn and other devices and the vehicle's electrical systems. The clockspring is located between the steering wheel and the steering column.
Maps Clockspring
Notes
Source of article : Wikipedia