Ignition wiring help

Hi all, I'm rebuilding a defender 110 200tdi csw (its got a genuine defender engine) the outside work is nearly done so put the oil, coolant and diesel in today and thought I'd have a go at starting her, nothing. Its got new alternator , starter motor and battery, does anyone know what coloured wires go to what terminal on the ignition as I think I might have them wrong ? I've got a large brown, a large white, a small white/red and a small white/orange, its a new loom from Autosparks, I took photos of all the wiring but the sd card has gone walkies so at trying to install the loom without any help. Just a thought all of the looms are in and connected but I haven't put any of the internal switches or clocks in yet would this stop it starting ?
cheers Ian