I am replacing a White-Rogers 1F58-72 with an Aprilaire 8465. I have a 2 stage heat system with heat pump and electric elements and AC. The original wiring was as follows:
Green G
Red R
Blue X1
Brown E
White W2
Yellow Y
Orange O

The Aprilaire thermostat has the following terminals:
RC Jumped to R
R Red
W White
Y Yellow
G Green
C
S1
S2
O/B Orange
L

This is how I currently have it wired. If this is correct, where do the blue and brown wires go?

All help will be greatly appreciated.

Blue will go to C. the Brown is not used with the new thermostat (tape it off).