You require about 24 volts to power the windshield wiper.
the wiper moder is pulling to many volts, consider replacing. this should fix your problem. however I would first test it with a meter.
230 volts
It should give you that information on the side of the motor
There are no volts in a light. A light consumes power.
Onions don't have volts.
Yes - you have many options - they are called "Beam Blades"
It is actually a wiper control module that controls this. I have replaced many of them. It is the cover that is screwed to the wiper gear box. Remove both wiper arms. Remove the plastic cowl cover below the windshield that covers from side to side. Once inside you will see the wiper motor/transmission assy. Disconnect the electrical connector, and remove screws from cover, and replace it.
6.3
You must remove the plastic panel located under the windshield wipers. There is about 5 or six torx screws under the hood and about as many Phillips screw hid by plastic covers across the panel.
none is magic
200
No, many European and far eastern manufacured vehicles have a shorter wiper on the passenger side.