auto folding side mirrors

[kvin]

want to know if someone can advise the parts needed to install the automatic folding side mirrors on an 04 X5? I know most rides would have had this factory installed item come as standard or option. Unfortunately, mine did not come with this function and would like to add it on.

if someone has done it before, please advise part nos and the costs of doing this mod.

Thanks in advance,
Kelvin