Hi Tango,
I may take a photo of a B2 Plus main cable. Will do it this weekend.
That cable has a “Twin” cable inlet (double round connector) where the Plus of the rectifier should be plugged in. The second plug in there should go to the fuse box (main fuse). Cable should be larger diameter than the other cables and be mostly white, indicated with an other colour.
The minus cable should go straight from battery down to a M6 screw in the right hand side upper motor case. It is above the kick starter, below upper rear motor holder, close to / behind rear brake light switch 🙂
I use to add an additional cable connection to the frame, to ensure the frame is properly connected to Minus. An electrical installation guideline (related to 230V AC in Germany) doesn’t allow to use mechanical connections as electrical connections as well.
In original condition the minus of the alternator and the battery are in the motor case and this is just connected via mechanical connections to the frame. Typically that works 🙂 I use an additional electrical connection as described above.
Cheers, Michael
Not sure about the minus of your rectifier. Maybe just a connection to frame (Minus) is required.
