Wing mirror replacement (for power folding)

[PerryGarrod]

I'm looking to replace my heated wing mirrors with power folding ones (A4 B8 8K5). However, there appear to be two types, one with single connector and another with two. Does anyone know whether both would work on my 2008 Audi, or indeed why there appears to be two types?
Thanks

[jraward]

I know this doesn't really help but this is something I'm very interested in doing too. Can it be done??