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Timotaeus
Samba Member
Joined: January 01, 2018
Posts: 6
Location: Berkeley, CA
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 Posted: Sun Mar 17, 2024 8:31 pm Post subject: wiper won't park - one speed motor with 2 speed switch |
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Hi
I have installed a rebuilt one speed wiper motor and 2 speed switch but the wipers don't park when the switch is turn off. Parking happens when I turn the switch to the first on position then the wipers are active. When I turn the switch to the off position the wipers stop but won't park. Switch them on they park and start wiping. there is only one way to install the motor.
Any Ideas? Thanks in advance. Tim |
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GS guy
Samba Member
Joined: December 03, 2007
Posts: 968
Location: Maryland
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| Posted: Mon Mar 18, 2024 4:59 am Post subject: Re: wiper won't park - one speed motor with 2 speed switch |
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Study the original wiper and switch diagram. Note that the "switch" is not a typical depiction of a switch for electrical wiring - the picture here represents a rotating conductor, the conductor (line in the middle of the switch) rotates about an imaginary center when you turn on-off the wipers. Also note that the park function of the motor is powered when the switch is on and "off".
Jeff
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70's vintage Deserter GS buggy - undergoing transformation to Super GS! |
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5470
Location: Seattle
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| Posted: Mon Mar 18, 2024 8:20 am Post subject: Re: wiper won't park - one speed motor with 2 speed switch |
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The wiper switch body is supposed to be grounded but your fiberglass dashboard is not providing a ground. When the switch is off terminal 31b hooks to the switch body and in a Bug that provides a path to ground through the metal dash. This ground connection stops the wiper motor quickly (plug braking) when the switch is off and the wipers reach the park position. Without a ground connection at the switch the wiper motor may coast through the park position and back to the point where power to run to the motor to reach the park position is restored (that is why 12v power is applied to the motor, not just the switch).
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| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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Timotaeus
Samba Member
Joined: January 01, 2018
Posts: 6
Location: Berkeley, CA
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| Posted: Thu Mar 21, 2024 1:23 pm Post subject: Re: wiper won't park - one speed motor with 2 speed switch |
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S
orry I posted this in kit car forum but It's a 1965 type 1 sedan. I have a ground to the switch. the wipers work but park first and I am still confused about the park function. I am think about buying a one speed switch on 3Bay and they are not available at any of the vw parts houses. I have another good one speed motor too, so if there is a motor issue which I don't think there is, but just in case. thanks for your input. |
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