AO Silver Member
Join Date: Mar 2003
Yes, quite normal.
By holding the wiper stalk up you are using the switch to complete the circuit. If you move it briefly then the switch makes the initial contact. This is followed by the parking circuit within the motor when the wiper stalk is released.
edit* by holding the stalk up throughout the single wipe you are not using the circuit within the motor* added for clarity
In case you don't know, the wiper motor's parking contacts have problems making contact through the grease on the parking plate. If you do a search on this forum you should find out more.
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