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Car Audio, SYNC, MyFord Touch & Electronics The Forum for the Ford Focus audiophiles. The place to chat about automobile sound systems, security systems, or show off your I.C.E.!
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01-06-2013, 02:09 PM
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Focus Rookie
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troubleshoot stock wiring harness
I have a 2003 blaupunkt HU that has no memory, as stated in another thread, but noone seems to respond. So, I need to take the bull by the horns and troubleshoot it alone.
 I have a feeling there is either a dead +12v circuit going to the HU, or the HU is shot. I think this because #31 fuse is not blown, but it retains no memory. How do I use a multimeter to check the harness? I would like to verify that theres power coming into the HU before going further. Also, should I be checking the fuse panel circuit as well? Not sure how to do this...Im not very electrically saavy, but I have a grasp on the basic principles. So, is there a guide on how to troubleshoot these wiring harnesses? Thanks in advance!
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