from my experience it's prob bad plug where it goes to bulb.napa sells a pigtail [plug plus wiring] for the 9004 bulb for about $10.pull the plug off the bulb and look at the female pins you will see the plastic bubbling.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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