Charging issues on a 72 Bonnie T120

Discussion in 'Bonneville' started by rich, Sep 17, 2014.

  1. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #1 rich, Sep 17, 2014
    Hi Guys!

    My '72 T120V doesn't seem to be charging very well. It is fitted with the bridge rectifier and zener diode and batt voltage struggles to reach 12.8v, even when revved hard. The rectifier has been tested and is working correctly. Unplugging the zener seems to make no difference. The alternator open circuit voltage is about 30v AC when revved. Is this normal? Any advice is greatly appreciated! Cheers, Rich
     
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