Guess I'd check the auto parts place.  Should be standard chevy stuff.  I had an AC line blow out on me and I had an outfit called Catco fabricate a new one for me. 

I recieved some kind of e-mail from the forum about how to run both AC's when on shore power.  Somehow it got lost and I can't find it now, or who sent it either.

On shore power you should be able to run both AC's only if you have rewired your unit.  It is assumed that in their day there would be only up to 30 amp connections and that would only power one AC.  The genset is large enough to run both however. 

I have not rewired my unit yet as I rarly see 50 amp plug ins.  I believe someone elso on the forum has done it and did a thread on it.  I can't get the search option to work however.  Anyone remember that.