I have a newly acquired 1951 350NH and the Ammeter is pointing to positive when I switch the lights on. Im assuming that either the ammeter is connected the wrong way round or the battery is. The battery is connected brown to '+' and black to '-'.
Does it matter which way round the battery is connected? If not can I simply swap the cables, or is that a big no no?
Many thanks.
Ammeter question
Ammeter question
1951 Ariel 350NH Red Hunter, 1964 BSA B40, 2017 Triumph Tiger
Twitter: @BeardyBikers
Twitter: @BeardyBikers
- Bob.Murphy
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Re: Ammeter question
These bikes are usually 'Positive Earth', which is unusual these days. It may have been changed to the more normal 'Negative Earth' - particularly if it has LED lamps which won't usually work on positive earth.
However, just swap the Ammeter connections over if everything else checks out OK.
Note: if you change the battery polarity you will have to "Flash" the dynamo to change its polarity as well - it won't charge otherwise. Instructions are on here somewhere if you do a search.
Bob.
However, just swap the Ammeter connections over if everything else checks out OK.
Note: if you change the battery polarity you will have to "Flash" the dynamo to change its polarity as well - it won't charge otherwise. Instructions are on here somewhere if you do a search.
Bob.
My avatar shows the late Len Rich in 1970 with the bike I now have - a 1958 Ariel VH
Re: Ammeter question
Thanks Bob
1951 Ariel 350NH Red Hunter, 1964 BSA B40, 2017 Triumph Tiger
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- dave.owen
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Re: Ammeter question
Most ariel I believe were neg earth, apart from 52-55ish when pos earth was used.
I'm sure someone will check.
Dave
I'm sure someone will check.
Dave
AOMCC Treasurer
Re: Ammeter question
warning.
If you have an electronic regulator it WILL care whether you are positive or negative earth - so be careful in altering the polarity of the bike to match the ammeter.
Do as Bob suggests, and just swap the wires over on the ammeter....
If you have an electronic regulator it WILL care whether you are positive or negative earth - so be careful in altering the polarity of the bike to match the ammeter.
Do as Bob suggests, and just swap the wires over on the ammeter....
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