Land rover defender wiring

Please could someone help, i have a landrover defender 90 200tdi project build which has a new loom. Im trying to find which plug i need to use for the glow plugs! Can anyone help as to what colours the wires are which go to the sub loom. Also the plug and colour wires for the brake master cylinder level switch.

Heavy Yellow/Black from the timer relay to the glow plugs (White/Red, Brown (feed from the battery), White and Yellow/Black to the timer relay, and Black/White for the brake fluid level switch.
These are always assuming that it is a professionally made loom, otherwise they can be a nightmare!

It the vehicle or loom is for a pre tdi, the wiring will be different. What year is it?

Thanks for the reply guys, i found the plug it was hidden down the back of the engine so all up and working now