2nd Gen to 3rd Gen towing mirrors wiring problem
 

I am converting my mirrors to the 3rd gen towing mirrors.
However, I cannot figure out the wiring. I think that I will have to double up some wires, but can't figure out which ones.
Can someone please help?
I know there are other guys who did the conversion, so please chime in.
Thanks! [guitar]

HI just wondering what mirrors you purchased to put on. I am looking to do the same but can't find them with heated and electric. Or did you take the orginals apart and adapted the 03 style on.