tweeder

iTrader: (3)

I bought these power mirrors but the seller said that there are no instructions.
I did some playing around an all I found out it that i'm no more a head than when I started. Anyhoo the mirrors wiring has blue, white, green and yellow.
This is what I found.

Blue ground + White power = down
White ground+ Blue power = up
Green ground + Yellow power = right
Yellow ground + Green power = left

Now for the truck, 2000 silverado. I took a test light to the harness and this is what I found.

Orange = heated mirrors
White = right
Yellow = left + up
Green = nothing
Black = nothing

I'm assuming that since the yellow has 2 functions that the white does to, mabey the down button is broken? I also tried matching the colors together but that did nothing. Any help is apreciated.