As bad as the Eclipse/Tom Tom in-dash unit that Roadtrek was using before, your Clarion/Tom Tom sounds worse. I don't have any problem getting addresses into the unit and it does find our location fairly well. The routing is terrible and it will at times say to turn right when the display shows to turn left, plus it will make a zigzag route when going straight would get you there just as fast. None of these are RV specific GPS units and will take you on roads that have too low clearances or are restricted to RVs including Roadtreks so be very careful to check where it is going before you follow it on to any limited access road.