HOW TO – Adding auxiliary input to a car stereo

Donn writes in –

This page shows you how to hack a cheap car stereo with the PT2313L audio processor integrated circuit to be able to accept an auxiliary input, say from an MP3 player. The need for such a hack grew out of my frustration with connecting portable music players to my cheap car stereo with those crappy FM transmitters.

Adding Auxiliary Input to a Car Stereo – Link.