Hi micco, I also buyed set of power folding mirrors to carina e. Got 2 mirrors, 1 switch and 1 relay box. Relay box part number on mine is 87989-20050, so it is from corona exsior. Also same amount of wires that yours. I opened the relaybox and those pins were marked inside. I managed to follow those wirecolors to the mirrors, and they matched as i wrote them in the picture. Hope this helps. I personally haven't got those installed yet, so dont know more..