F 550 2WD Super Duty V8-6.0L DSL Turbo VIN P (2006)
G1
G2-G3
Normal Operation
The battery saver relay provides power to the demand lamps. The demand lamp switch, which when activated provides power to the selected demand
lamp. The demand lamps are energized anytime the instrument cluster is awake. The instrument cluster grounds the battery saver relay. When the relay
is energized, voltage is supplied to the interior lamp circuits.
Possible Causes
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Fuse
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Circuit 54 (LG/YE) open
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Circuit 705 (LG/OG) open
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Instrument cluster