Red Wire - Perm ECU Live
Big Black Wire (Green Trace on some) - Coilpack Live (Switched).
Small Black Wire - ECU Live (Switched)...must be seperate from the coilpack feed.
Green wire with Red Trace - Rev Counter Feed
Brown With Green Trace - Oil Pressure Light

Browns - One is the switched fuel pump earth I am told, and one is the earth. I earthed both due to wirign my fuel pump seperatly.

HTH