Doug,
Your light problem could be one of several problems from a headlight switch to a circuit breaker in the LF electrical bay or even a Smart Wheel module if so equipped. You will just have to trace the circuit and see where it is losing voltage.
When it comes to play in the steering, a front end alignment will not affect that. If you are familiar with the way a long wheelbase coach drives and you think that it has excess play, you should have the steering checked by an experienced suspension technician at some place like Henderson's Line-Up or Josam, and not at Camping World or a similar shop. There is a possibility that you just need a steering stabilizer with a trim unit, but the coach will need a through check to determine that.
Gerald