http://sr20det.nismo.org/srtech.htm
and
http://www.srswap.com/html/info/inst_wiring.htm
May shed some light, the orange and black could be the 102 - EAI control solenoid output (egr valve control ?) - Orange Black OR 111 - Turbo boost pressure control solenoid (over boost cut ?) - Orange Black
Blue white could be 45 - Ambient air tamp sensor input - Blue White
and Red white, well there are about 4 red and white wires in the harness, 3 of them go to coilpacks so you can count those out. Could be 105 - Fuel pressure control module - Red White.
The green yellow on the KA should have a green yellow matched to it on the SR harness: Yellow / Green stripe - Speedometer signal on both.
Red KA harness wire= no idea