From memory

saff loom 6 wires

Black red trace= fuel pump
brown white trace=temp gauge
black=ignition live(must be connected into loom as voltage sensitive for iscv)
green=tacho

other 2 wires can't remember

you can use the 4i loom no probs and connect the wires above job done

if you need anymore help pm or post pics will jog my brain LOL

Paul