From this site: https://www.carlemon.com/lemons.html#NJ
Passenger automobiles and motorcycles. Includes the non-living portions of motor homes.
Repair Interval and Coverage Period
3 repair attempts or 30 calendar days out of service.
2 years or 18,000 miles.
So no, if you think it through, the lemon laws don't really cover the problems of your RV, at least not all the stuff that owners are grousing about in these forums.
Just like the recent Newmar issue regarding the front axle weights. They originally contented the rv was fit for the intended users most of whom they said pull trailers with their stuff inside. Then they offered an "upgraded" front axle as a future purchaser option and in some cases replaced for some of the customers, who helped uncover the issue...All staying within any lemon laws.
And as I understand it, the court cases have not usually favored the buyers. However, your attorney will get paid regardless.
The key to the lemon laws, as I understand it, is being able to rescind/revoke your contract if not capable of being fixed within something like 30 days.
The mfg are expert at just staying inside the limitations and dragging owners along. These are minor issues for Freight liner, Ford, and Cummins as they have the quality controls in place and the volumes.
The mfg is really for the most part a converter and all the warranties and lemon laws are limited and specific to the original mfg.