ST1300 Heated Grips

[ST Gui]

On this side of the pond we would call that 'potting'.

Yep. In the service a lot of our gear was 'weatherproofed by potting in and putting in a somewhat water resistant contained. One dead always dead. *Kind of cool to pull apart something and have a rectangle/square/whatever. Usually it was opaque but a couple times it was amber and you could see most of the components. Pretty cool.

 

[Xargos427]

Good point!
According to the service manual, the charging voltage shall be between battery nominal (12V) and 15.5V @ 5000 rpm. Quite a large range, indeed.
Note that I would be much more worried if I saw 15.5V on the battery terminals. Ouch! Here goes the battery and bulb life…

Before putting the bike away for winter, I did a quick voltage check with the engine running. I installed a small dedicated 12V voltmeter to monitor the system voltage, (the voltmeter was checked and confirmed for calibration) placed in such a way that I could see the reading during riding, but not connected directly to the battery terminals. It was connected to a similar circuit has for the grip controller.
It was quite steady @ 13.7V (±0.1V), except when the flashers were activated. Then it was all over the place.
First scary symptom!
The rest is described in the previous post.
Understood that I have to push the investigation further. Mainly, checking the battery voltage @ 5000 rpm.
Waiting for a relief in cold temperature to bring the bike out for a quick test cession, in the car shelter…
More to come...