Is there a aux input on the stock 2003 HU? And if so, can I use it to install a plug and play sat. radio? Would the CD/TAPE or MODE buttons then control when the sat. would play? Sorry if this is an often asked question, I did a search but only found info on the 2005 HU.

 

there a few adaptors out there that'll convert the MD changer interface into a standard RCA (which cna be converted to 1/8th)