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#896241 11/24/22 1:45 am
Joined: Apr 2002
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Nick Offline OP
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Until today, whenever the key was turned ON on my '70 Daytona, the ammeter would show a slight discharge. However, at present there is no movement of the needle when turning on the key and no juice to the lights and elsewhere.

However, when the key is OFF, there are 12V on each of the ammeter poles, yet when the key is ON, there is no voltage to either pole?
And, when the key is OFF, there are 12V at one of the poles of key switch, yet with the key ON, there is no voltage at any of the 3 poles.

Has my ammeter given up the ghost (of Lucas) or does this indicate some other problem?

Can I simply bypass the ammeter and connect the two pole wires together?

Wiring is stock, positive ground, Tympanum fitted, points ignition.

Thanks in advance for any help.

Last edited by Nick; 11/24/22 2:23 am.

When people who should have known better cautioned me about the dangers of motorcycle racing, I always told them that a fear of death is nothing more than a fear of life in disguise.
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Nick #896249 11/24/22 2:41 am
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I just put both wires on the same post.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Nick #896255 11/24/22 5:56 am
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your battery is dead . ( weak battery voltage disappears under load )

Nick #896327 11/25/22 3:02 am
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Nick Offline OP
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Thanks for the help.

Found the problem - ground wire under seat has rotted away


When people who should have known better cautioned me about the dangers of motorcycle racing, I always told them that a fear of death is nothing more than a fear of life in disguise.
Nick #896423 11/26/22 9:33 am
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Originally Posted by Nick
Thanks for the help.

Found the problem - ground wire under seat has rotted away
Playing around with bikes for a lifetime has taught me that if you encounter an electrical issue that is particularly confounding, add a ground wire! thumbsup

SR

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Nick Offline OP
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Yep, and that also applies to modern, computer controlled cars.


When people who should have known better cautioned me about the dangers of motorcycle racing, I always told them that a fear of death is nothing more than a fear of life in disguise.

Moderated by  John Healy 

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