Charge Light Situation *SOLVED*

[guido guzzi]

Morning everyone,
Turned the key on the X Convert and the GEN  light briefly  flashed on and went out. Yes, it's the high quality Bosch system 20A (?)
Motor started 'on the button' as usual. Now GEN light is ON, Headlight is not.
Helpful suggestions and humorous jabs welcome...

[Frenchfrog]

Check all the connections in the charge system, then the brushes.

[guzzisteve]

The correct rectifier is 22Ah not the BMW 20. Even BMW switched to it in the late 80's. Guzzi's have used the higher output one since around 76.

[czakky82]

I’m not understanding how the headlight would go out too. Unless I misinterpreted that part.

There are some really good diagnostic write ups for airheads online
https://forum.boxerworks.com/viewtopic.php?t=9791

I’ve had open rotor windings, a lost diode board ground, and a poorly seated brush spring give me trouble in the past….

[guido guzzi]

I’m not understanding how the headlight would go out too. Unless I misinterpreted that part.

There are some really good diagnostic write ups for airheads online
https://forum.boxerworks.com/viewtopic.php?t=9791

I’ve had open rotor windings, a lost diode board ground, and a poorly seated brush spring give me trouble in the past….

So this one was almost too easy: one wire connector on the rectifier not fully seated.
You've certainly learned a lot.  That's why there's no initiation needed in Guzzi clubs. The ownership is the initiation! 

[Chuck in Indiana]

Thanks for closure on that. 
 As  czakky sez.. In my experience, rotors seldom go beyond 50,000 miles without failure. The reason? They are hiding under the cover and nobody *looks* at them. A few minutes cleaning up connections keeps things from getting hot and failing.