I have the rear bumper grill on my SolAire that has the quick connect also. I thought my hose was missing as well but found it in a bag in the bottom of one of the kitchen drawers. It was not easy to find, so if you bought new, make sure you check every storage area and drawer if you haven't already. Otherwise you could probably get one from the manufacturer of your grill.
2013 Palomino SolAire 317 BHSK
Nights Camped YTD: 39
TV: 13 F-150 Screw EB Max Tow, ProPride Hitch
1995 Jayco Eagle 304 BH sold- March 2013
1978 Nomad 18 sold- April 2005