I'm trying to install a thermostat. But I need some help.

I have seven wires for my heat /cool system coming from the wall. The colors are as following:
Brown
Red
Blue
Green
Orange
Yellow
White
I have a Robershaw thermostat. I'm not which port is for which wire. These are the ports:
C
L
R
Y2
y1
E
G
W2
O
B

I will like to see thermostat picture and circuit diagramm suitable for york outdoor and indoor of air condition system.

Some of them look like a sure thing, some may require a little investigative work on your part. The "solids": Red to "R", green to "G", yellow to "Y1", white to "W2" (may require jumper to "E", stay tuned), orange to "O". The "iffies": Blue and brown. Here comes the "gumshoe" part: Locate where thermostat wires connect to indoor unit (if split-system) and note letter designation of terminals where blue and brown connect. If connections are not identified, some studying of the unit wiring diagram will reveal the answer. Post results.

Thanks for your help.
I was able to get my thermostat installed
C - Blue
L
R - Read
Y2
y1 - Yellow
E - White
G - Green
W2 - Brown
O - Orange
B







Some of them look like a sure thing, some may require a little investigative work on your part. The "solids": Red to "R", green to "G", yellow to "Y1", white to "W2" (may require jumper to "E", stay tuned), orange to "O". The "iffies": Blue and brown. Here comes the "gumshoe" part: Locate where thermostat wires connect to indoor unit (if split-system) and note letter designation of terminals where blue and brown connect. If connections are not identified, some studying of the unit wiring diagram will reveal the answer. Post results.

Looks good, except... typically the white and brown are reversed.