M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Where do the horns ground?

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Old Sep 20, 2004 | 08:40 PM
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JAD
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Where do the horns ground?

I repalced the stock horns several months ago with the ML 55 horns and everything was great. Then several months later I hit the horn (its my wife's car) and only the drivers side horn is working. I'm trying to guess what the problem is so...I think the horn itself is working but I'll check it to be sure by swapping it to the driver's side. I think the horn is getting a signal, but I'll check that too. If it's not, is it easy to replace that connector that attaches to the wires? Third, maybe there is a problem with the ground? Maybe I need to bust out the sand paper and clean up the contact point. Where do the horns ground? Thanks guys.
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Old Sep 21, 2004 | 11:53 AM
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2008 BMW 335xi Coupe
whyd you switch to ML55 horns? is there a difference in sound or something?
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Old Sep 21, 2004 | 12:36 PM
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From: In A Van Down By The River
2014 RX 350 F Sport, 2007 Scion tC, 2000 ML 430 Money Pit Finally Gone! Oh Happy Day!
Originally Posted by kostas
whyd you switch to ML55 horns? is there a difference in sound or something?
Same reason I did............... original horns sound like a Honda, the ML55 horns sound like a real Mercedes.
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Old Sep 21, 2004 | 12:36 PM
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Well, the stock horns were all coroded and not working, they needed to be replaced. And yes, the ML 55 horns are much louder.
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Old Sep 22, 2004 | 07:07 PM
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The horn ground runs into a splice with other ground wires then they terminate behind the left headlight. ML55 horns are mounted below the radiator bridge, the rest of the ML's are mounted in front of both front wheels. Autogunner. P.S. Both type horns terminate at the same place so check that ground stud.
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