installing AUX into 2004 325i
I would like to install an AUX input into my 2004 325i bmw. I have no idea how to go about this but getting it installed at the dealer is WAY to expensive. When i called they said i have to start from the trunk (where the main computer is?) and wire it all the way to the radio.. is this true? any one have directions or steps to installing a plug and what plugs/parts to order?
any help would be great..