New Beetle 2005 motor window

First, excuse my english. I have a troublen with the car of my wife. It’s a VW New Beetle 2005, three doors.
The problem is that the motor of driver window don’t work.
I tried three different windows motors and the same problem occurs. When I activate the driver window switch, I hear a slight "click" on the electronic circuit of the window motor, but it refuses to work. I checked this :
1 - I checked all the fuses in the box fuses with an ohmmeter and all are OK
2 - The window switch is OK. I exchanged it with the window side passage and it works.
3 - I undid the motor of the electronic circuit and I applied directly to the terminals of the 12V. It works.
I thought a while it was the relay contactors that were at fault. I changed my mind. It is impossible that with three differents circuits I find three times the same problem. Have you a clue? The 12V is apply to the circuit becose I slight the « click » of the relay.
Thank you