How to install a headunit on a 325is

[suprapimpa]

My friends aftermarket cd headunit won't hook up with the old wiring harness, does anyone know where to get a wiring harness to hook up to bmw's?

[93ex]

http://www.metraonline.com/product.aspx?sku=70-8590

should be the harness you need... call around and ask

[TIM TIM TIM]

circuit city.. best buy.. any car audio store probably

[Bumpin Expo]

www.installdr.com for wiring diagrams

[suprapimpa]

thanks everyone