I had one cable on the under-the-stem junction box failing intermittently, supposedly because the bag bar was pushing and rubbing against the junction box. I've replaced it and modified my setup so that this wouldn't happen again and it's been fine ever since.
I had one cable on the under-the-stem junction box failing intermittently, supposedly because the bag bar was pushing and rubbing against the junction box. I've replaced it and modified my setup so that this wouldn't happen again and it's been fine ever since.