A simple series of tests for your rectifier

Hi Vince, thanks for the advice,I will follow your instructions to the letter and let you know.The seller said he had replaced their battery recently , I was worried it was slowly draining, faulty earth or similar, will let you know ,cheers.

Mike

[Luddite]

Originally Posted by Moco1961

Hi Vince, thanks for the advice,I will follow your instructions to the letter and let you know.The seller said he had replaced their battery recently , I was worried it was slowly draining, faulty earth or similar, will let you know ,cheers.

Mike

If you charge it off the bike, (or at least disconnect it), and it still drops to 12.1V, then you'll know it's definitely the battery and not a parasitic drain or faulty wiring. If, on the other hand, it holds its charge, let me know and I'll show you how to check for a parasitic drain.