OK. Found this.
https://www.dmv.ca.gov/portal/wcm/connect/f93f514b-ffa6-46cd-9da7-939ef851e288/ch13_comml_vehs.pdf?MOD=AJPERES
Doesn't look like any exemptions for RV's. Declaring for the TC will add $322 to the almost $900 yearly reg fee. When we gat a 5th wheel it will be an additional $546. Crazy over a hundred dollars a month to register a truck in CA.
The linked doc again stresses that weight stickers need to be affixed to the side of the truck which I refuse to do. Since the truck is being used for personal use and not a business I am guessing I can't even write off these fees that a business would be able to.
What a bunch of BS