Trying to switch from a Weathertron 3AAT82B1B1 to a ritetemp 6025.
I have a Trane heat pump with aux heat option.

Weathertron ------- ritetemp
R ------- RH
T ------- TAPE OFF
O ------- O
G ------- G
Y --------- Y
X2 -------??
B ------ - C
W-V ------ RC
other ritetemp options are B/ W-2/ W/ Y-2/ A

I am not certain that I have these correct , but believe so. With that in mind what happens to the X-2 black wire.

Thanks for you help.
Jim Nixon

Look at the sticky notes in the front of this board.