You need the switch for them. It's a single joy stick and it controls both mirrors. They are not Carellos. They are Vitalloni Turbos or Baby turbos. Can't tell from the pictures.
If it is missing, then the only other place you will find one is off of a Ferrari. Don't know which model? I do know last dual one I saw for sale was about $1,000. The singles are less expensive but often need repair.