Operation - Section 3 OM3020.3 02/01 Page 3-40 Instrument Panel & Indicator Lights (7) HAZARD WARNING LIGHTS The hazard warning light switch flashes all the turn signal lights. Pressing the bottom side of the rocker switch (toward the triangle) activates these lights. Pressing the top side of the rocker switch (toward the “OFF” symbol) turns these lights off. (8) LAMP TEST SWITCH The Lamp Test switch is provided to allow the operator to test the indicator lamps prior to starting the engine. To test the lamps, and the warning horn, turn the key switch (1, Figure 3-6) to the “Run” position and press the bottom side of the rocker switch for the “Check” position.
All lamps should illuminate, except those which are for “Optional” equipment that may not be installed. The warning horn should also sound. Any lamp bulbs which do not illuminate should be replaced before operating the truck. Releasing the spring-loaded switch will allow the switch to return to the “Off” position. LINK-ON WARNING LIGHT The “LINK-ON”, or “LINK ENERGIZED”, indicator light is located next to the D.I.D. display panel behind the passenger seat and indicates the AC DRIVE system is ENERGIZED. The D.I.D. display panel is for use by maintenance personnel only, and is located out of the operator’s field of vision for that reason.