We chose to use the Classic Instruments cluster. Wiring was a simple matter of plugging the two mating connectors from the dash harness to the gauge harness. Note the two twisted wires in the cluster disconnect. These are the signal and ground wires from the vehicle speed sensor (VSS) used by the electronic speedometer. As per the manufacturers instructions, these wires were twisted to cancel out any signal interference. AAW recommends this practice for all electronic speedometers and provides plenty of wire to do it. The completed cluster was then set in place.