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I have a factory navigation, not affected by this AV selector. The AV selector is obviously for 4 inputs, so one of the inputs will be used for phone screen to go to main screen, the other input will be used for the in-car DVR (I am working on that one), the remaining two inputs can be used for anything else... Since I have headrest DVDs, I was thinking running them into the selector...
I just added the AUX input to the front panel of the selector...
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