Symptom: All the lights are not on Diagnosis procedures
Lighting coil of
magneto or its
output wire is
broken or shorted.
All the lights are not on
AC power supplied lighting system
DC power supplied lighting system
Separate conductors of lead wire bundle of magneto from
the cables of the whole vehicle. Check if there is power
output from lighting coil of magneto by lamp test method.
Press horn button or slide turn signal light.
Start engine and separate
connectors of rectification
regulator from cables of the
whole vehicle.
Short circuit inside
rectifier
Disassemble headlamp assembly
and check if the bulb is burnt.
Electric horn sounds loudly
and turn signal light is lit.
Electric horn does not sound
and turn signal light is not lit.
Normal power
supply from
battery
Use a piece of wire to touch
quickly positive and negative
terminal of battery to check spark.
1. Check if fuse is burnt;
2. Check wiring between
battery and ignition switch
for short circuit and break
3. Check if ignition switch is
broken or shorted.
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