We have AAA plus RV. Its not that much more than a regular AAA membership and covers you in any vehicle anywhere. The nice thing is its good all the time, not just an rv plan. The thing you have to watch out for is they have some exclusions on towing an RV. Not sure if differs from club to club, but if you have to have the tv and the trailer towed, they may charge extra for towing the rv. All the other roadside services (like tire changes) are covered on the rv. They will arrange trailer towing and take care of any breakdowns, but you may have to pay for the tow.
You could checkout Good Sams or Coachnet for dedicated rv plans.
2005 F-150 FX4
2013 Rockwood Roo 23 IKSS