Vanity Light problem

[paulgorringe]

Hi all,

Hopefully this is going to be easy to solve but at the moment I am completely baffled by it.

The passenger vanity light does not work on my 2005 W209 CLK500
I have two good bulbs (confirmed by fitting in drivers side) I have tested voltage at the bulb holder and can confirm that I have 12v switched by the mirror flap, ie 12v open, 0v closed.

The bulb never lights up!!!!

Please somebody point out whatever it is I am missing

 

[thejohn]

my guess it's not eathing out as it should. get a piece of wire an earth it out see if that works
John

 

[thejohn]

Just had a look at my C270 and the power seems to flow to earth through the clip where the visor clips into and that has 2 connects I guess one to supply power and one return the earth. Or it could be the switch on the visor

John

 

[nigel cross]

Just had a look at my C270 and the power seems to flow to earth through the clip where the visor clips into and that has 2 connects I guess one to supply power and one return the earth. Or it could be the switch on the visor

John

I have tested voltage at the bulb holder and can confirm that I have 12v switched by the mirror flap, ie 12v open, 0v closed.
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