The key numbers don't always match up with the printed list - for example, the list says that my access doors should use key number GH005, but in fact they are LL432, the same as my battery boxes.
The CH751 is the most common RV key there is, and any so-called replacement lock for any SOB will 99% of the time be a CH751. When I had my 1994 LY motorhome, all the locks were CH751, which was disconcerting, as anyone could have opened my storage bays and removed my tools etc. When I was at Quartzsite, I bought replacement locks from Industrial Lock & Hardware, Inc.
- they're inexpensive high-security Ace-locks (like what are used on vending machines) sold by Mark Silver of Industrial Lock. Mark, BTW is one of the sons of the late comedian Phil Silver and a really nice guy.