Tip - Easily Add an Auxiliary Port to an Old Car Stereo for About $3

If you have one of those stereos that was released in that awkward time between CDs and MP3 players, then it might be missing the now-standard auxiliary port for easy playback. Redditor Esplodies found themselves in this exact situation, and cleverly hacked together an auxiliary port for about $2.50 that works on some older CD players with a CD changer output.
Tags: DIY, Cars, Radio, Digital Music, Stereos, Automobiles, Top, Lifehacker