4ws problem

[davo 3254]

4ws not working still! have finished paint and panel, will now look into 4ws problem. could be just a broken wire?
have replaced the control unit... light gone off on dash, but still no go?
i do have a loose wire/connecter under the bonnet... cant see where it connects... double wire ,sitting on top of the left side injectors, long enough to reach the power steering pump. ????
added photo of finished car