Just removed the BMW Ipod system including the modue - re-connected 6 stacker CD player but no sound??? does scroll thru the tracks etc so not sure if I need to do anything else?

Thx

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X5 4.4i 2006 sports package, Titanium silver, Sports exhaust with Xpipe, Limo tint, 20" wheels 168's (Black), 25mm H&R wheel spacers& arch flares all round - Loud........

Work in progress -:
Replace BMW Ipod system with DICE - installed but no sound yet??