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Tom Wesenberg · 10-03-2016, 07:12 AM

Anything to disrupt a smooth flow of current between the generator and battery can cause the meter needle to flutter. Could be a loose wire, sticking or worn out brush, corroded or loose nut on the ammeter, generator, starter, etc. Jumper leads are great for bypassing suspected bad connections, and will easily let you know you have just bypassed a bad part of the circuit.

BTW, a bad battery, such as one with a short between plates due to junk in the bottom, can do this also.

10-03-2016, 07:12 AM	#3
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Fluttering Ammeter Anything to disrupt a smooth flow of current between the generator and battery can cause the meter needle to flutter. Could be a loose wire, sticking or worn out brush, corroded or loose nut on the ammeter, generator, starter, etc. Jumper leads are great for bypassing suspected bad connections, and will easily let you know you have just bypassed a bad part of the circuit. BTW, a bad battery, such as one with a short between plates due to junk in the bottom, can do this also.