Since 1971, Auto Sound is one of the leading mobile electronics companies. Based in Plainville, Mass., the firm offers a variety of 12 volt services, including alarms, remote starters, keyless entry systems, power windows, door locks, satellite radio, CD changers, laser detection systems, blue tooth phone kits and others. The company offers installation services on rear wing spoilers, window tinting, wood dash kits, heated seats and the like. Its product list includes safety and security, audio and mobile video, GPS navigation, sunroofs and moon roofs, custom interiors, exterior trims and accessories.