Help!

trying to put a new dash in my RS16i. Two main problems....

all the wires fell out of the ECU socket when I removed it. I have no idea which one goes where.. any idea which colour goes to which socket??

I can't get the steering column off. I've taken off the two nuts and two bolts holding it but it won't budge. An I missing something? do i need to take the steering column off or can I sqeeze this through the hole in the dash whilst still fitted??

Could really do with some help if anyone out there knows

Thanks a lot guys!!!