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Electrical drain

  • Thread starter Thread starter ybot1966
  • Start date Start date
Y

ybot1966

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1977 Gs750 starts fine, turn lights on lowers the idle still runs fine, drive for a day then at lights suddenly cuts out lights off neutral light very week, i take the side panel off jiggle the wires to battery and regulator all earthed, no burning. Turn on neutral light faint not enough juice to start even kick start, After about 10 minutes i turn the it on and its back to full juice and starts. Obviously having the lights on is draining the system, but is it the regulator or stator causing it
 
ybot1966 said:
1977 Gs750. After about 10 minutes i turn the it on and its back to full juice and starts. Obviously having the lights on is draining the system, but is it the regulator or stator causing it
Click to expand...
Yes, having the lights on at idle is more load on the the system,especially since the charging output is little or none at idle. But if battery recovers after ten minutes ( did you mean it starts with kickstart?), something else is going on. Do you still have the seperate rectifer and regulator? have you gone thru the stator tests?
 
it starts up again with kick start, all i can see on the side (re rectifer and regulator) is the finned square thing, the alternator? and a silver tube, the regulator? the cut out occurs at stops which im thinking is a dodgy stator
 
ybot1966 said:
it starts up again with kick start, all i can see on the side (re rectifer and regulator) is the finned square thing, the alternator? and a silver tube, the regulator? the cut out occurs at stops which im thinking is a dodgy stator
Click to expand...
That finned thing is likely the rectifier assembly which sends its output to the regulator- probably a small metal box. You must do the stator paper tests before you blame the stator. Since it "cuts out" at stops rather than have no output at all, I might blame the rectifier, but I often leap to conclusions! The replacement for your stock setup is a combo unit- a rectifier and regulator in one finned box.In any event do some testing!
 
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