Strange headlight behaviour

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Strange headlight behaviour

Postby Tresidder17 » Sat Jul 15, 2017 4:27 pm

I recently bought an MY07 3.0r spec.B liberty. Its been well maintained and is in great condition. When I went for an inspection, it had both parker lights and the left high beam light not working. The owner said they were just blown globes and offered to replace them but i didnt have time to leave the car with him for a few days until he fixed them... stupid me.

I've got the car home now and went to replace the globes. Both the parker lights were blown as the owner said and i replaced them with no problems. However, the left high beam is not the same story.

The high beam globe appeared to be in perfect condition so i swapped the globe with the globe on the right hand side. the globe from the left side now worked in the right hand headlight however the globe in the left hand headlight (which had been working fine in the right hand headlight) was not turning on so I think its safe to say the globes aren't the problem.

I went on to check all the fuses in the car (at least, i think i found *all* of them) and found no issues here.

Im starting to run out of ideas on what could be the possible cause of this problem. Any suggestions or a wiring diagram would be greatly appreciated.

thanks guys
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Re: Strange headlight behaviour

Postby fedaykin » Mon Jul 17, 2017 11:42 am

Relays, plugs.
See if the plug is getting voltage when you high beam.
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Re: Strange headlight behaviour

Postby teK-- » Mon Jul 17, 2017 5:40 pm

Have you checked the plug for voltage with a multimeter,? Then try back probing the plug to ensure a true result. mine was giving a false negative result, due to the plug being slightly melted inside where it was not obvious. After I changed the plug the bulb starts working again and was much brighter.
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