I do feel your pain and I probably would have stroked out by now personally.
There is no lemon law on recreational vehicles or motorcycles in your state last I checked
Go to your state attorney generals website to check.
Dealers aren't obligated by law in California to replace or give loaners (although I think it's good business practice), they have to do their due diligence for Honda which can take a bit as the factory will have them doing all kinds of diagnostics.
Did you have this same dealer install all of the add-on's? They are way more obligated if you did.
You might have a much better chance calling Honda direct...although I can tell you they're going to back pedal a bunch before you get anywhere, get the phone number for the local zone manager call them everyday multiple times a day. I have a friend with very deep pockets (more money than sense) who has sued several manufactures & dealers for things like the over heating issue, he ultimately won every time but I think it was more about them getting him off their backs he bothered them so much.
The best of luck man,