On our trailer I took one of the key locks out, and made sure that all the key locks were the same size. Then went down to ACE hardware and bought the number I needed. It worked out also that I lucked out cause the key was the same for all the locks. So I have 1 key for all my locks.
2011 jayco 33rlds, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2008 Suzuki sx-4, hers. Retired Air Force, now Retired.