RV Repair: cant get heat, pilot model, gas furnace

Question
   
   When i try to light my gas furnace, all that happens is the fan comes on. I have a 1986 terry taurus,24 feet.I have a thermosstat on the wall by the kitchen.any advice on how to get my heat heaten, would be great.

Answer
Chris,
    Judging by the year of this unit it may be a pilot model.  Do you know if it is a pilot or direct spark ignition furnace?  If you can provide me with the model # and serial # I will have a better chance of providing you with some useful information.  Please let me know.

Darren