OPERATION DETAILED CONTROLS AND GAUGES Meter Display Portion 0. Pilot Display Meter (1) Engine Pre-heating Monitor (2) Engine Coolant Temperature Gauge (3) Fuel Gauge (4) Service Meter Pilot Display 0. When the starting switch is ON, the pilot display lights up when the display items are functioning. Engine Pre-heating Monitor 0. This monitor lamp (1) indicates the pre-heating time required when starting the engine at an ambient temperature below 0єC (32єF). The monitor lamp lights when the starting switch is turned to the HEAT position and goes off after about 18 seconds to show that the pre-heating is completed. 3-7