ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
(Sheet 1 of 2)
PROBLEM NO. 6
NO POWER TO INDICATOR LIGHTS, SERVICE LIGHTS, ETC.
Engine starts. Batteries fully charged.
Ceiling heater blower works.
All power to the cab, except for the ignition-start circuits, comes from the main power relay (11, page 2-70). The main power relay coil is energized
by the ignition circuit which receives its power from the 8 amp circuit breaker connected directly to positive side of batteries. Go to step 1.