Here's a few videos that you may find usefull...
They are predominately made in the USA but the methods are universal…
Alternatively, here's some pdf files you can view or download...
Installing your RV lock
Programming Your Keypad and Remote Fob
Playlist
7 Videos
0:32
2:47
10:42
1:50
3.06
9:21
1:57
Content
If you don’t feel like changing the batteries every six months, you can always hardwire the lock in. You just need a 12c to 6v converter, some time and patience, and some expertise, but be aware, you may affect any warranty if you unexpectantly cause damage…