Dammed thieves.
We take almost everything out of the trailer when it goes to the dealer for service/repair.
We lost our 1st 2 summers of planned RVing to thieves. Took RV to shop in spring for add-ons, both years had all the A-V stuff stolen. Only thing left was the wiring within the walls. Wasn't just our trailer, every trailer in that line on the lot got hit. Both years it took dealer 5-6 months to get all the parts in and installed. The last time (the LAST time, we've since found a reputable & capable repairman) we brought the trailer to them for repair we left a lot of "small" stuff in the trailer. Yup, stolen, just about everything we'd left thinking none of it was of enough significant value to worry about: larger model much-used Swiss Army Knife (with very special sentimental value - yeah, my own damm fault), Leatherman, 2 well-worn fleece vests, old grubby looking gas grill, all the kitchen tools, stuff like that.