2009 25hp 2stroke voltage problem

[Rossetti693]

Hi guys, new to here and this has probably come up before but have recently purchased a boat with a 25 yamaha on it. Im having a problem with low voltage, i bought a rectifier from my local yamah dealer and was shown on how to put it in etc.. Now was just wondering i anyone knows the reason as to why its only reading around the 6.5v mark? Just seams very strange to me :/ anyways any advice or help would be much appreciated, cheers luke.

[rodbolt17]

did you test the stator lighting coil output voltage?

[Rossetti693]

I could have mate, i tested a few things, where the mechanic showed me to plug it into was putting out around the 20v mark