Northwest RV Supply in Eugene, OR. also has those. They are not quite the same base mount as the factory but they tell me it can be made to fit. I have not tried to change it yet, I swapped the one from the kitchen area and that worked, despite the fact that it only toggles in the 'up' direction but it at least works.
Local:(541) 746-9092
Toll Free: (866) 678-7467
Email:mail@nwrvsupply.com
Dean Johnson