Need help from the XS 400 folks.

I've got a really slick bobber in the shop for a non functioning charging system. I've got it traced to improper wiring AND a bad voltage regulator. Of course all the stock connectors have been cut off.

Here is where I need help:

The voltage regulator has 3 wires - brown, green, black. I believe the brown goes to (+) and the green and black connect to the green and black on the exciter coil.

I don't believe the black should be grounded.

Could one of you guys have a look at yours and confirm I've got it right? I really don't want to buy a manual for this little job.

Even better, if one of you guys has a link to a manual or can post a PDF of the electrical diagram I'd be grateful.

Thanks.

 

once again...


this is how mine is wired and it works FLAWLESSLY

 

The XS is a little bit different than the XJ, the regulator and rectifier are separate. Of course the wire colors are different too. :wink:

Based on the XJ wiring, and other Yamahas with a field coil and separate regulator, I don't believe that either side of the field coil gets grounded. Would like confirmation from someone with a working XS400 charging system though.

 

mine is an XS400 Maxim. are you talking about the SOHC Xs400's? look on thechopperunderground.com for those diagrams.

 

Sorry, it's an 80 - SOHC.

Finding lots of diagrams on thechopperunderground which will be very useful. Not finding any XS400 diagrams though.....

 

Maybe check the Diagram for an XS 650, probably used he same unit.

 

Carl:

Sorry that I just noticed this thread. I'm rebuilding an 80 XS400 and have all the manuals and wiring diagrams. If you still need, I can send whatever you need.