For use with the Livorsi GPS Speedometer with Odometer and Standard Livorsi GPS Gauges without Odometer made after July 2015. For Standard GPS Gauges without Odometer Made before July 2015 order 730-GPSSQ3 Fast 10 Hz 10x update with 4 ft harness with ring terminals, 2 3/4" L x 2 3/8" W x 7/8" H