.. the prob have three vanguards cams...decided to go wired.I get no switching function and two video feeds to the TV on on top each other
Another [cheaper] option is simply use the X10 Universal Module to disconnect the hardwired [always on] video feed. I have tested this and it does work. I striped a RCA video cable... leaving the [outer] shielding wire intact. Then I cut and used the video wire through the relay-like connections of the Universal Module (UM506). Switching the module on and off will then connect and disconnect the video feed.