On February 13, 2013 at 10:37, Duct Tape said...
my guess is that he wanted to plug the video sensors into unused composite or component video outputs on the cable boxes, not into the matrix.
I don't think that will work. We always had to use a 12v wall wart plugged into the switched outlet on the back. All the Motorola cable boxes here still have signal on the composite and green component when off.