Update: all the necessary wires (within reason) come with the kit- each camera come with 60' of wire.

There's a good many videos on installing surveillance cameras on Youtube. Wired cameras are a bit more involved than I'd imagined; the spouse wants the wires hidden and somehow run inside the soffitts. I'm not sure that's feasible. We also have to figure a place for the DVR, where it will be wired into our internet router. There's some planning that we need to do here.