Someone keeps posting that you can buy locks and stuff at http://www.rvlocks.com/
http://www.rvlocks.com/ is not a valid website.
http://www.rvlocksandmore.com/ Is a valid website. Maybe that's what the person was thinking of.
They sell the Global Link brand locks. I ordered new door handles and a whole slew of baggage compartment locks with their "keyed alike" option to re-key EVERYTHING in my fleet, so everything uses the same key.
Someone else posted that there's only 20 or so key cut styles. That's not correct.
Fastec (FIC) keys, there are 51 or 52 key styles.
Global Link keys, there are 50 available.
Granted, that's still not very many key codes.
A well equipped dealer might have a re-key kit. I asked my dealer about getting locks rekeyed and they gave me a "deer in the headlights' look, then claimed it wasn't possible.