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Hi there hope i can be of assistance.
Sounds like you have covered the basics. Just to confirm, have you checked the fuse box in the passenger footwell?
Thanks for the quick response.
Ok so we are happy with the fuses, its unlikely to be the switch, as the offside is working ok.
So now we need to check how much voltage is getting to the bulb.
Do you have access to a multimeter?
Ok not to worry.
A headlamp failure is easily diagnosed. It should take the mechanic literally seconds to find out which part of the circuit has failed.
This involves checking the bulb itself, making sure it is housed correctly. Then with a multimeter checking the voltage at the bulb, the voltage on the positive side, and the voltage on the negative side.
By doing this they will be able to determin which side of the side of the circuit has failed and then carry out the necassary repair.
As i said above its unlikely to be the switch as the offside lamp works ok, i would suspect a broken wire or dirty/damaged earth connections local to the headlamp assembly. Or it could be a poor connection on the multiplug that attaches to the bulb.
if you need any further assistance, please ask, cheers Bob