On both meters I mounted them in a switch plate for the flat decorative wall switches. I used push switches generally used on lamps and fans for each so I could turn the meters off (they are terribly bright at night. Both meters are fused with inline fuses and both have appropriate power sources right next to them that I could tap into. Right now I don't exactly remember the specifics.
The AC meter is helpful, especially with the AC to keep a check for low voltage. The DC meter doesn't do a whole lot since I don't dry camp, but it does let you know if your convertor is working. I like them, but I'm a natural tinkerer and gadget nut.
