Rob ,
Be sure that you use 10/3 Insulated cord ! While you can get away with a 12/3 if plugged into a 15 amp household circuit it would serve you well to maintain the same size as called for by the RVIA . If you need any of the parts for repair remember that Benlos in Irwindale has everything that you might need .
Greggd
I've got to do this- my bro drove away while plugged into my house last year. 5 miles later we were flagged down with a road stripped cord, which I inherited a good chunk of- been meaning to make a backup shore power cable. He got all his replacement parts at Walmart before we even got home to discover the 110v adapter was 10' from the extension cord... we rebuilt half for him and the rest is hanging waiting for me to get around to it. Good thread!