Vehicle sidelight control system

A vehicle sidelight control system is provided that automatically illuminates right or left sidelights inautomatic response to turning of a steering wheel or motorcycle handlebar, or in response to a vehicle movement that will operate a gravity-effective switch, such as the leaning of a motorcycle in a turn. In one embodiment, the gravity-effective switch assembly further incorporates control logic and a wireless transmitter, making aftermarket installation a simple task. The control system is extensible to manual control and/or cooperation with signals that otherwise exist in the vehicle. The control system can be used to operate decorative lights, or any auxiliary function that is desired to be associated with turning of a vehicle, instead of or in addition to operating sidelights.