I have the VMS645 and Video 1 is hooked up to my rear camera. All works fine and full screen video appears when I go in reverse. I do not have Video 2,3 or 4 hooked to anything. I want to use video 2,3 or 4 to display my GPS screen. Is this possible? Ideally, I would be able to push "Video" button at any time while driving and see either Rear Camera or GPS (or any other video input I might use) in full screen. The obvious reason for wanting this is that the VMS645 screen is much larger than any GPS screen. *Note: The setup screens do not even list a Video 4 option. Greatly appreciate any help and hope this setup is possible.

Submitted by Art on Mon, 2017-05-08 13:00

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Hello Bob To use the other video, just plug in a composite video source. As you look at the back, the most-inboard BNC socket is port-1. 4 is then the outboard. As the socket is a BNC-type, you'll need a little mechanical adapter to whatever your plug is; usually an RCA type. Does your GPS have something like this? Art //

Submitted by bobkat on Wed, 2017-05-10 18:00

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Thanks Art. I left the backup camera on #1 so it works when shifted in reverse. I just set "Default Video" to the new connection that I am adding.