I came a across this website showing how easy it was to add toslink out to a car head unit. I wonder if it's possible to do it on Ipod/Iphone. But we need to find the digital out pin of the audio processor chip on the PCB (if it even exists)
Here's the page for reference:
http://www.turboegt.com/Audio/Car Audio/Digital Outs/digital_outpu-f.htm
There was also an old thread in this forum talking abt it here:
https://forums.macrumors.com/threads/263772/
Here's the page for reference:
http://www.turboegt.com/Audio/Car Audio/Digital Outs/digital_outpu-f.htm
There was also an old thread in this forum talking abt it here:
https://forums.macrumors.com/threads/263772/