TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 2-102 2-36. WINDSHIELD DE-ICER OPERATION (M1114) NOTE De-icer will not operate if vehicle is not running. a. Start engine (para. 2-12). b. Flip toggle switch (1) on de-icer unit (2) to engage position. Hold until indicator light (3) illuminates, then release. NOTE De-icer will continue to operate until toggle switch is moved to OFF position or engine is turned off. c. Toggle switch (1) will revert to ON position and the de-icer unit (2) will be in operation. d. To discontinue de-icer unit (2), flip toggle switch (1) to OFF position, heating element will disengage and indicator light will go out. e. Stop engine (para. 2-14).