Plug the new conversion harness in between your Civic's C101 plug and the 05-06 engine harness' C101 plug.

Route the long section of harness with 4 pin oxygen sensor connector through the firewall and connect to the upstream air/fuel sensor (05-06 RSX air/fuel sensor, in exhaust/header before converter)

There will be 4 loose pigtail wires remaining.  On your Civic's ECU 'E' plug, make the following changes:

1.  Move the wire at ECU pin E1 to E17

2.  Move the wire at ECU pin E26 to E25

3.  Insert the green wire with white stripe from the conversion harness to pin E2

4.  Insert the green wire from the conversion harness to pin E12

5.  Insert the white wire with green stripe from the conversion harness to pin E26

6.  Insert the orange wire from the conversion harness to pin E8