I've found the exact problem....
There's a little stick that poke out from behind the steering wheel, on a spring, and it's supposed to continuously rub on a brass plate on the back of the steering wheel.
These are not making contact.
The steering wheel is fully on and the little 'stick' thing is popped out as far as it will go???
Argh help someone asap, I've got it in bits atm!!
Joshua.