Wireless tv out from S3 (possibly) to RCA

[mickdw]

This is a long shot but here goes,

My in car screen can take video from RCA source (red, white & yellow connectors). Now Ive had a galaxy S connected to this via cable to display phone screen on dash and it worked fine allowing nav etc on car screen with tv out switched on in phone menu. I have been leaving that phone in the car for this specific purpose.
Im now attempting to go alittle more advanced. What I would like is to have an S3 doing the tv out function to some form of wireless receiver. I believe this would be hdmi also. I would then require a converter to change the hdmi to be compatible with the RCA connectors - I believe this requires a powered convertor, not just a cable.
Finally, I would like to locate a NFC tag in the car that would be setup to configure the phone for the required normal car use such as turning on sat nav and tv out when I get into the car.
Im not tied to a particular phone yet but im leaning towards an S3.
Is this a runner or am I dreaming?
The RCA is old tech but im stuck with it and tbh picture quality is fine.
Any ideas?
Is it even possible to mirror the screen like this wirelessly or is it only selected files that can be sent?

 

[SIII groupie]

DLNA but that means a wi-fi network enviornment. T be honest you are above my learning curve al ready. But I did my best.

Good luck. I hope you get working.