As I said, the model I have is the RS-3460, which does not come with a 12 volt power source, (the instructions also state this) so there is no 12 volt power going up to the antenna. The wall plate only has the round, cigarette type receptacle, which I use to connect my ac/dc tv, but it does not have a switch like I mentioned in my first post. You can easily see on EBay the different wall plates, some of which come with the switch, and some do not. I just looked at the rear of the video control center, and it does have an input source for 12 VDC. Once I test it with my meter, I will be able to tell if this is where the power to the antenna comes from.