00 suzuki king quad 300 burnt regulator/rectifier connector

I just bought a 91 and when I went to change the oil in the rear diff it had water in it (milky oil). There are no leaks in the seals so I think it's coming in the vent tube. Thing is I can't find it. Anyone know where it is. 
 
Thanks
 

Looking for Suzuki ATV VIN (Vehicle Identification Number) Number Decoders? Once you find your ATV VIN number off the tag on your Suzuki ATV, you can go to all kinds of websites that have VIN Decoders available. The best ones are backed by the Suzuki ATV manufacturer, however there are plenty of aftermarket Suzuki ATV VIN Decoder websites on the web. This topic will stay pinned and if you find any to add, please do it with a reply. 
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CARFAX https://www.carfax.com
autoDNA https://www.autodna.com
VinAudit http://www.vinaudit.com/
decodeTHIS https://www.decodethis.com
VINCario https://vindecoder.eu/
NICB Theft Check https://www.nicb.org/theft_and_fraud_awareness/vincheck 

OK, sooo  I finally did the old skid plate and screen removal to clean out my oil sump during an oil change...  This bike only has a couple thousand miles on it.  Runs like a top still...  Very few issues over the years after buying it used.
But boy I wasn't expecting to see this!  Piece of a circlip, stuck up in the screen, and a another shard of metal and maybe a piece of gasket material.  Nothing in the oil but that...  Pristine otherwise, and still runs like a top.  Always has.
Soooo, is it a wrist pin clip?  That's the only thing I can think of like this that could end up in there.  But definitely wanted to throw it out to guys that have seen the innerds of these more than I have.
The valves on this thing are still within the factory spec even.  Been a really good lil workhorse...
Any other ideas?

Hi there have just bought a quad which i believe to be either a 125 or 150 2 stroke on vin plate it says make pony anyone ever herd of it ?

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