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    Electrical drain

    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

    #2
    Originally posted by ybot1966 View Post
    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
    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?
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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      #3
      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

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        #4
        Originally posted by ybot1966 View Post
        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
        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!
        1981 gs650L

        "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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