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My 2001 F115TXRZ is not charging. I have cleaned all cable connections and charged the battery. With motor not running, I read 12.6 volts on digital voltmeter. When starting, it obviously drops and when running, it comes back near 12.6 volts. When I increase motor speed, there is no change in voltage. I have two motors on seperate batteries and when I check voltage on the other motor, it reads close to 14 volts when motor is running. I have checked the 30 amp fuse and it checks good. How can I determine if the problem is the rectifier or the coil?
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