The intermitent (1st click) WW's recently are running at full time (as in 2nd click) with no 'pausing'. In 5 or 6 minutes running, the duration gradually begins & increases to approxametely normal, every time. Whats going on here? (Normal & high are ok, 2nd & 3rd settings)

('83 300 CD)

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Get a hold of a spare wiper relay to try out.

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Wheres the wiper relay located in the car?

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https://www.pelicanparts.com/techarticles/Mercedes-W123/61-ELEC-Windshield_Wiper_Relay_Replacement/61-ELEC-Windshield_Wiper_Relay_Replacement.htm

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I gutted a 300D once, I have a similar looking relay(?). What is the part # of that?
edit: # stamped on the relay?

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