Question about audio from (Kenwood) HU when you send video to an overhead monitor

[h4ldol]

I have a Kenwood DDX5901HD DVD receiver HU in my 2014 Sienna. I want to install an overhead monitor to keep the kids entertained. I'm thinking of the Alpine PKG-RSE3DVD. I plan to send video to the monitor from the HU yellow RCA output on the HU to the input on the monitor. Basically, what I want to do is have video on the monitor (and HU) and audio through the HU>amp>speakers. I don't want to use FM transmitters, wireless headphones, etc.

So, if I only send video to the monitor (only use the yellow RCA output on the HU), in most HUs will the audio come out of the HU to the speakers then (since I'm not connecting anything to the white/red RCA audio outputs)? I am asking generally assuming that most modern HUs function similarly, although any specific experience with this or other Kenwood HUs is even better.

Thanks!

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