I had a similar pair of loose wires under the wardrobe of my 2003 Classic 25. I never did find out what they were for. I taped them off.
I have a similar pair of unterminated wires laying under the bed of my 2005 Classic 28. I dug through the 2004 wiring diagram and found that they are for the twin bed model and are not used in my queen bed unit. The wires should not be left powered and unterminated; a short could very well start a fire.
I suspect the loose wires in my 25 also were associated with the twin bed model.
I generally find the wiring of the trailers to be very crudely done. There is lots of excess wire and apparently, no one at Airstream owns a diagonal pliers to trim the wires to more reasonable lengths.
John W. Irwin
2005 Classic 28 "Sabre-Dog III"
2013 Silverado 2500HD Duramax/Allison LTZ
WBCCI #9632, TAC TX-10