Gx470 Audio / Video Port

[jlasorsa75]

I own a 2004 GX 470. Does anyone know if it is possible to run the audio through the main speaker system when using the AUDIO / VIDEO ports located under the rear A/C climate control in the back seat? Or, do these ports only run audio through the wireless head-phones?

I am trying hook up my iPhone / iPad to these ports and run the audio through the main speaker system and not only the head-phones. I was hoping I could use these ports as an AUX port for my iPod too. Anyone else try doing this? Thanks in advance!