A65 not charging

[Mannifc]

Hi, Can the ammeter effect the charging system on my a65. All was fine until i took the battery off to trickle charge it, when i put it back on I stupidly connected the wrong way round and blew the fuse.
I then got new fuses and went and it did again, always had negative earth bikes.
I have tried a new regulator and still no charge, thinking of trying regulator/rectifier as an upgrade.
Can you cook the ammeter and prevent charge passing through it.
Stator is only a few years old converted to 12v single phase.
Regards,
Chris

[JulianS]

The ammeter is not polarity sensitive so should not have been hurt by the reversed battery connection.

Disconnect the alternator at the snap connectors, with engine running you should get a voltage between the output wires.

[AWJDThumper]

Unfortunately, you will destroy the rectifier if you connect up the battery the wrong way round - this will happen before a 35A fuse blows. It will also result in forward bias of any Zener diode fitted which might also blow.

[JulianS]

Some useful alternator information here.

https://jrcengineering.com/portfolio-view/lucas-alternator-tips/


If the rectifier fails and allows current to pass from battery to stator you will probably demagnetise the rotor.

[AWJDThumper]

The rectifier diodes would have burnt out more or less instantly which would have prevented any other damage being caused.