I had a similar problem on my old Peugeot 307, wipers would wipe maybe once
or twice a month. Steadily increased over a year until one day they woudn't
After a month of diagnosing it turned out that some wires underneath the
fuse box were getting hot and had melted together over time causing the
wipers to wipe!
It is probably the signal/wiper stalk... wear and tear... bump it in all
different direction and see if it triggers the wiper. When does it do it?
Another possible source is the wiper relay itself on the motor... wear and
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