Thanks people.I would understand if the car was a fiesta or a mondeo but not a sierra. by the looks of things they have damaged the motor part of the mirror too.Dojj ive seen the slot under the mirror.I will have a look on ebay and get a complete mirror bought.
The security light on the front of my house stopped working a few weeks back. Ive been to busy with getting my car back on the road.
Ive seen the 4 plugs that hold the mirror casing on.
Thanks for your help people...