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vincent52

onward gharging probs

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You don't seem to have had any response Len. Is this still the ignition problem you posted about before or did that get resoved ?

Edited by RobH

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Does it have a dynamo or alternator? Any modifications?

Did it work once or is this something new?

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Hm. Which earth were you fixing and which fuse blew? 

I can't see how the polarity could be changed accidentally - it requires several deliberate actions to do that.

If you switch the lights on does the ammeter show a discharge?

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Well that means the connection to the regulator must be OK on A and A1, as is the ammeter connection to the battery, and that the ammeter is telling the truth. 

Unless you were doing the earth thing with the ignition on I can't really see how the fuse blew and even then it's difficult to see how that could affect charging as the current flow shouldn't have gone near the regulator, but let's assume that the short might somehow have burned the cut-out contacts. Have you looked at the internals of the regulator for obvious damage?  If you do, disconnect the battery before you take the top off as 'making' that contact accidentally will push a very heavy current through the dynamo and could burn wiring and destroy the ammeter. There is no fuse in that circuit to cut the current either.

You could try cleaning the cut-out contacts with fine emery but take care not to bend anything as that will change the settings.

 

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