In regard to the idea of "splicing" in a video source for video in motion...it seems reasonable enough. Only problem I can see is does it still need to be converted to RGB or will the display handle a standard composite video signal? You could actually hack the audio in as well with a little creativity. It would seem if there is no composite to RGB conversion to be done it should be fairly simple to do a backup camera and an auxillary video input like:
Backup Camera:
-Wire the backup camera to only be powered when the vehicle is in reverse, easy to do by grabbing our power from the reverse wire in the driver kick panel.
-Setup 2 SPDT relays to "hijack" the video signal to our display using a ground and our reverse wire to charge the coil and switch both the - and + signals of our composite source when the vehicle is put in reverse, thus giving us our video from our backup camera whenever the vehicle is in reverse. You may not need to switch the - of the composite video signal, but I'm not positive anyone else have more information on this?
Auxillary Video Source:
-We can "hijack" the audio input to the headunit much the same way we did for our backup camera video source. Using 4 SPDT relays setup on a switch to "hijack" the audio input from our CDC using the NF Audio inputs on the RNS-E using pins B8 and B9 (it would of course require that your RNS-E be on the CD source however)
-The same switch could also be used to trigger another relay to hijack the video to the display which would be wired in front of the backup camera relay so when the relay for our Auxillary video source is charged then that would be the normally closed source on our backup camera relays.
This setup would allow us to do a few things that aren't currently possible such as, fully auto-switching to backup camera without interrupting any other audio playing, video in motion without disrupting navigation (directions would still be audible, speed signal would still be intact, and directions would still be available in the DIS), and connection of an auxillary AV source without the usage of either a 1280 or 1417 (but it would mean flipping a switch, you would already have to switch to the TV source anyway so IMO switching to CD source wouldn't be too much of a nuisance aside from the fact it wouldn't be as straightforward as switching to TV source). If anyone has more information as to whether or not we would need to convert composite video to RBG and the pinouts for the display we could probably get something rolling fairly quickly. I already have a little box I built awhile back that would be a matter of connecting a few wires to test this setup, but I need a little more information as to what is required. If we do in fact need to convert to RGB this will be a bit more complicated so any info that anyone has about converting our video signal would be a great help.
-SixOneS4
