Light tower lamps won't light: breakers, ballasts and generator
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Applies to: Genie RL-4 and other towable light towers
Symptoms
- Engine runs but some or all lamps stay dark
- Lamps flicker or cycle on and off
- Breaker trips
Why it happens
Tripped breakers, a failed ballast or bulb, loose mast wiring, or low generator output.
How to fix it
- Reset breakers and note which circuit trips.
- Check generator output voltage.
- Swap a working lamp's bulb into the dead fixture to isolate bulb vs ballast.
- Inspect the mast coil cord and connectors for damage.
Tools and parts
- Multimeter
- Bulbs or ballast
What the factory service manual covers
Electrical: generator output spec, ballast tests, wiring diagrams. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.