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    Re: Ford Mondeo 2005 - Any experience with gas discharge headlamps? # Archived Message

    Posted by andyhyoung on February 4, 2009, 7:21 pm, in reply to "Ford Mondeo 2005 - Any experience with gas discharge headlamps? #"

    A simple analogy is these Hid lights operate like an ignition system.There is a ballast/igniter unit bolted to the lower part of the headlight which produces a high voltage to "strike"the gas in the xenon bulb.The only real test that can be made is to ensure that there is a good power supply and earth to the ballast unit.The bulb cannot be tested with a meter.If it is just 1 light inop,it is best to test by substitution with the other side.hth

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