2010 Star Gauge System All LHD Models Electrical Star Gauges Function slave Gauges read information supplied by Speedometer outputs and display information to driver Air Line Air Line Air pressurel Star Gauges Air system components feed air pressure directly to designated air gauges in dash J1939 J1939 2010 Resistive (RX) Module 2010 RX Module acts as a gateway to convert J1939 engine and system inputs into WST Star Gauge databus signal J1939 J1939 J1939 J1939 Air Line Air Line J1939 J1939 Page 1A-9 Rev (2.3) - Feb 2015