wiper issue

[bedwards]

1985 c10. Last week my wipers started wiping 3 times when I start the truck. I shot a light oil down the stalk to the multi function switch which cured it for about a week. Now its back doing it again. It seems that what I used last is what it does when I start it. If I use the mist function, they wipe once and if I use the clean function, they wipe three times when I start the truck. The pulse function seems to work fine and they wipe as they should.
I have contact cleaner but have hesitated to use it just yet.
Any ideas are appreciated.

thanks in advance

 

[Rysalka]

Check the connectors on the wiper motor, the two wire plug toward the top of motor was not making good connection an gave me multiple symtoms, cleaned and tighten fixed all

 

[bedwards]

I think that is my issue also. I have taken it loose and re-connected it and the problem has gone away. The connection didn't look corroded but it is 35 years old.