1.- Remove the windshield wipers and the grill that covers the bottom of the windshield, you will see the 2 plastic bases where the windshield stands.
2.- Remove the plastic surround side and top mouldings, do it gently since the plastic can be old, you're going to use it again.
Step 1: Glass detachment
This is where the helper is needed because he is going to tell you when to stop, when he sees the spatula blade out, he's also going to tell you where is not finished.
Step 2: Take out the glass
With a sharp knife remove the mirror and clean the base with the same knife, you may need some sandpaper and gasoline to clean it well.
Step 3: Mirror
Clean the surface with gasoline / Attach the plastic moulding . Use packing tape to help.