A simple series of tests for your rectifier

[Darren69]

It could be draining through the reg/rec if the reg/rec is faulty. It's rare but it's always connected across the battery even when bike if 'Off'. Just some more food for thought.

Originally Posted by Darren69

It could be draining through the reg/rec if the reg/rec is faulty. It's rare but it's always connected across the battery even when bike if 'Off'. Just some more food for thought.

.....thanks Darren, will look out for that one too, sounds like I may be embarking on a voyage of discovery here !

[Darren69]

Originally Posted by Moco1961

.....thanks Darren, will look out for that one too, sounds like I may be embarking on a voyage of discovery here !

If you're chasing down a parasitic battery drain then Lud's diode tests should show that as a potential issue. you can disconnect the black plug from the reg/rec and there should be no drain on the battery or there will be if the diodes in the reg/rec are failing.