My instructions with my loom says this :

1/ ignition live. ( connect to black wire on main loom )
2/ water temp. ( connect to Brown/White white on main loom )
3/ tachometer/rev counter ( connect to Green wire on main loom )
4/ fuel pump ( connect to Black/Red wire on main loom )
5/ permanent battery 12v Live ( connect to Blue/Red on main loom )
6/ spare.

I've got the instructions here if you need a copy but you would need to check that they aren't different from your loom so I'm only quoting what the instructions from Car Looms UK supplied with my loom,

Stevie.