I unplugged the door switch and the start switch. It still runs when the timer is moved from off to a cycle. I can hear a click in the motor when it starts up and when it stops. I assume this is the movement of the centrifugal switch. Now I'm even more confused. Why is it operating with both switches out of the circuit and what is the click if it's not the centrifugal switch?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13