New reproduction instrument panel voltage regulator or IVR for all 1969-73 Mercury Cougar and Ford Mustang. Additionally fits 1969-71 Torino/Cyclone without tachometer, 1969-70 Ford full size, and 1970 and newer Ford Maverick or Mercury Comet. Mounts to the rear of the instrument clusters, voltage regulator for dash gauges power. Features Solid State electronic circuitry. Ford part number C9AZ-10804-A.