hey guys, i have a 2003 mazda 6 ts2, it has a bose 6 cd changer in it. i bought an bose replacement mp3 changer from ebay(model GR1A 79 EGX). i tried to fit it in. everything went in fine, however when i switched it on. i could hear the unit load up but there was no interface. i contacted mazda, they said that i had the highest spec cd player for that year and couldn't upgrade to mp3. so basically the mp3 changer only fits 2005 model onwards. i did however check a few sites that mentioned the changer to fit all models. maybe it needs modification. any info or help would be much appreciated.