I have a 1989 mobilehome with original hardware, both shower faucets are broken, no man around so I do repairs if I can myself, am buying new onepiece and need to know do I need to turn off water to house before I attempt to do this? Also any tips would be appreiciated. Thanks

For sure turn water off, sometimes theirs shut off valves, not sure about the shower since a lot of times there behind the wall,But when ever doing plumbing its good to shut the water off to what your working on, if no shut off valves need to shut off main water to house.The sight labeled Shower Plumbing looks pretty good on the little subtittles below.