I've put in a 22nd hand power steering motor and its not working , the only strange thing that I noticed is that the wires in the plugs were a different colour , however the model and year were the same , has anyone had a similar issue? , thanks

I just realised that the original one has an extra red wire and 2 relays, this one doesn't , is that the problem?

Around 2003 there was a change from relay motors to non relay. The two are not compatible.