QUOTE(xx_ph4nt0m_xx @ Jul 17 2008, 02:33 PM)
So im attempting to put in a head unit from my old vehicle in my sontata. i got the correct wiring harness. i even checked it against the wiring diagram from the hmaservice. i know that the wiring matches up but when i turn the new head unit on i have no sound. i know that sound is coming from the head unit cause i plugged a home stereo speaker up to it which worked fine.. im unsure now why i dont have sound. is there a separate amp system for the speakers? im just dumbfounded as to why its not working with this head unit and it works fine with the stock. i might just go to circuit city and make them do it but i'd rather do it myself if anyone can help.
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I had this same problem and solved it...click link for info
http://www.hyundai-forums.com/index.php?act=ST&f=84&t=16560