Mine are also in the right front wheel well. Two cables come through the frame at a hole slightly to the rear of the tire, and one through a hole slightly forward of the tire, I just pull them straight out, away from the frame with the awning rod. Just a little pull and you can hear the air hiss. But, I always do it when the coach is "aired up", partly so that I can see the cable loops. It does make sense that if you have aired down, there won't be any air in the tank to come out.
John and Susan
2005 Itasca Meridian