ELECTRICAL SYSTEM KEY DESCRIPTION KEY DESCRIPTION 39 - FUEL GAUGE SENDER 60 - CIGAR LIGHTER RESISTOR 40 - HYDRAULIC FILTER SENDER 61 - BRAKE PRESSURE SWITCH 41 - HOURMETER [03D17] ELECTRICAL SYSTEM 9015 770 and 770 (Automatic Blade Control System) Motor Graders PC1504 in GRADER, MOTOR 770