I was checking out Aber R-24 Pneumatic Joints, Nipples and Valves set
when I recalled that John was asking about the availability of such an item:
http://www.network54.com/Forum/47209/thread/1338509566/1-35+glad+hand+air+line+connections
Hope this helps:
http://www.model-art.eu/en_GB/p/ABER-R-24-135-Pneumatic-joints-nipples-and-valves/1655
You'll have to get some Detail Master red hose to replicate the emergency line, though. The Aber set contains only black hose.