FEATURES of Defi-Link ADVANCE System The Defi-Link ADVANCE system allows gauges and displays to be attached to the ADVANCE control unit with a single "DAISY CHAIN" wiring system. Gauges, displays, and ADVANCE Control Unit are equipped with microcomputers. Distant gauges and displays can be operated at hand. The system is also designed to allow all sensors to be attached to the ADVANCE control unit, so that gauges and displays can be mounted separately without the need for multiple tubing or wiring to each gauge.