The Wireless Chassis Ear Electronic Squeak & Rattle Finder is a unique diagnostic device specifically designed to diagnose squeaks, rattles and other troubling noises in various locations of a vehicle's engine, axles and chassis. The system is easy to use and can be set up in a matter of minutes. Being wireless transmitters there's the added convenience of no tangled wires.
Chassis ears are an electronic device that transmits vibration from suspension points via clamps that are connected to a main unit where they are converted to sound.