[wwhitfield]

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

[ade engr]

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

[KC13]

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.

[wwhitfield]

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.

[KC13]

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