The SEN-x012 are designed to adapt from '96 and newer stock Harley- Davidson speed senders to Dakota Digital gauges. Each adaptor is for a specific series of gauges for easy inline conversions without cutting or splicing wires. SEN-6012 - Extension for use with MCV-7xxx, MCL-5xxx Series, MCL-4xxx, MCL/ HLY-2002, HLY-3011/3015/ 3016, HLY-6000 and HLY-1000 series speedometers. * Adaptors can be used on Sportbike and Metric Cruisers when triangular Deutsch connector is removed.