I have a 2005 Z4 2.5i with Premium and Sport packages. The interior auto dimming mirror is leaking inside. I considered sending it to
http://www.radar-mirror.com/ to have it fixed ($89) and may be add also homelink module ($199). I took off the mirror already.
However, I am also considering buying a mirror from eBay or any of the forums that includes homelink and compass. Based on some reading, I believe I don't need a retrofit harness since my mirror already has auto dimming. Is this correct? Would the homelink work without additional wiring?
My second question is which other mirrors would fit in my car? Based on some reading I believe any mirror with alarm led and taken from a convertible should be OK. Can anyone confirm? Is a mirror from an E46 330 convertible OK?
The Z4 has the key fob receiver in the mirror so I believe but I am not sure that it's the same way with 3-series convertibles.
Thanks in advance.