My front light are not working

[Stuart85]

Just wanted to thank you all for your advice I swapped the alternator and my lights are all working thanks once again

[iangaryprice]

Are you checking them with the engine running as some bikes dont illuminate headlamps without engine running ?

Any history of bike .

have you seen them working ?

 

On many bikes the headlight will not illuminate untill the engine is runnng, this prevents the battery being run down and provides extra power form the battery to start the engine.

When the engine is runnng a relay will switch to turn the headlight on.

The trigger for the relay is often the output from the alternator.

Witht he engine off the alternator out put is 0v, when tis runnng the output isa bout 14v.

The 14v switches the relay turning th eheadlight on.

Your fault could be with htis relay.

To trace the fault you will need the wiring diagram for your bike.