ok if i read ALL of this right. for a 01 325i sedan i would have to get a newer HU if it doesnt not have a AUX button or i would have to get an interface to convert the Cd changer(which i dont have either) to an AUX port?
an the new HU has to be 09/02? and then i could make my own AUX cable for an i pod that could fit in the new rear HU?
One more qquestion...i have a chevy and i did something similar but as soon as i unplugged the radio(stock) security thrft system locked me out completly and had to contact GM to activate it again. will it do it on a bmw stock HU?(stupid question)