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83SC Speedometer questions
Dear all Electrical Fanatics,
I am helping my friend to get his 911 SC Mod 83 back of the road The Speedometer does not work Ignition on: On point A is 10V and the schematic only shows one wire to be hocked up. This 10V comes from the mileage counter. Is this normal His car has a brown black wire addtional on poind A. I have no ID what it is used for. :confused: Who can tell me about this mysterious wire! http://forums.pelicanparts.com/uploa...1269199904.jpg I assume the common failure mode is the ried switch. Next time I will check the resistance from this unit directly 31B and minus. Is point A supply ried supply and is 31b the positive side of the trigger of the ried switch. How much is a new ried switch? Thank your in advance for the help. I notices an error in the schematic. Interface III(10) is listed gn. In reality this is brown. BR Bob http://forums.pelicanparts.com/uploa...1269200388.jpg |
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