We just purchased a 1993 Damon Challenger, but the guy we bought it from didn't know how to turn the dash fans on. There is no switch on the dash or the fans, themselves. Here is a link to pics, if this helps any. Scroll down to the pic of the inside front, which show the fans.
http://www.stormpages.com/fireside/motorhome.htm
Thanks,
Tari
http://www.stormpages.com/fireside/motorhome.htm
Thanks,
Tari