560SL, '86 (w107) fuse #12 (radio) - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 09-24-2013, 09:56 AM Thread Starter
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Vehicle: 560SL, 1986 and GLK 2013
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560SL, '86 (w107) fuse #12 (radio)

My fuse #12 is always jumping. I have unplug the radio, heated seat and about everything that seem to be connected to it. I looked in a MB manual about how to debug this problem. It sound that I can look for resistance. I have a reading on the wires of the radio... Now, that is at the connector for the radio. I also have the reading at the fuse socket. My guess, there is a faulty line in the harness. Is there any information on where is that harness is run? Any suggestion on how I can fix this problem? Thanks all
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post #2 of 4 (permalink) Old 09-26-2013, 07:30 AM
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When you say you "unplugged everything connected to it", do you mean all at once or one thing at a time?

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post #3 of 4 (permalink) Old 09-29-2013, 01:08 AM
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I think this is due to overload on the fuse #12. First disconnect everything connected with this fuse like radio, heated seats and alarm module as well. Then try to start, if problem solved then connect back one by one everything to the fuse circuit and if problem persist then study this manual. I hope you will find it helpful.
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post #4 of 4 (permalink) Old 07-17-2014, 12:02 PM Thread Starter
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Lightbulb Found the causes

Well after long hours of trying to plug and un-plug what was on the fuse #12. Un-pluged radio, lights.... There was one of the roof light (well, as there is no roof, the windsheild frame light ;-) ) that was the problem... but I couldnt find easily as I un-pluged it and the fuse was still jumping... but when I fix one of the rear signal light (the socket for the bulb was broken) and was to put everything together, I found there was a short in my inside light... good use of electric tape to protect the connectors and the problem is now fix... one thing is sure, you need quite a few extra fuses to get to find the problem...
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