The TV tuner is Mono, you will only be using 2 of those RCA connectors as indicated in the instructions with the kit. Verify the pins are in their correct locations in the white connector to the TV module:
Pin 4: Signal from audio (+)
Pin 5: Signal from audio (-)
Pin 6: Signal from video (+)
Pin 15: Signal from video (-)
You can get audio in stereo, more info can be found in this link:
http://www.xoutpost.com/articles/x5/s...vd-stereo.html