USC-BMW 3 series E46 with original NAV SWC interface
BMW 17 pin round pin steering wheel control interface for vehicles with original navigation screens that have the tuner unit in the rear of the car with the round pin connector.
Car Audio Steering wheel interface allowing use of original buttons with a new aftermarket head-unit.
BMW – 3 Series (E46) (1999 – 2006)
Must be used with patch lead to suit make of head unit being fitted.
Alpine, Clarion, JVC, Kenwood, Pioneer, Sony.