Received today, thanks Adrian.
I don't think I'll be too bothered about a reverse feed either. My existing one already takes power and is switched for illumination with the headlights (has the ambient lighting already) so hopefully I can just take a feed from that within the mirror loom rather than taking it from somewhere else.
Did the PF have the ambient lighting? Not sure when this started.
Hopefully I'll find the time to fit it, might even get to use it too!
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Cars...
'93 Audi Coupe 2.0 Alpine White (sold)
'99 Audi S4 Merlin Purple - K04 upgrade to 412hp (sold)
'00 Audi S8 Agate Grey (Sold

)
'11 Audi Q7 4.2tdi Unknown Red (Classic Red Pearl Effect - thanks MJ)