Port Windshield Wiper Runs non stop
Good morning
As the title indicates- my port wiper runs non stop, even with the toggle switch completely disconnected. . Obviously when I disconnect the Orange power wire at the actual wiper motors connector, the unit stops. With the port switch connected and the Orange wire connected , all functions operate except “Park” (or stop)
The middle and starboard wipers operate correctly.
My boat is a 2006 (32-276). The wiper motor AM 230-1002.
The wiper assembly is 230-1065.
The relay is Tyco #VF4A-41F11.
The system including the relays are stamped 2005.
Although not the issue, two of the wiper switches were literally just installed , “Carling Technologies, LW1A11Z-1165100- XCS1. 8A, 14v .
This week I bought 3 new switches. I had planned on replacing two of the switches , one with a broken toggle and the Port switch, as like most the Postings, I initially thought or maybe hoped that might correct the run away wiper. The third switch ( starboard) is original to the build date.
I have read through all of the available Sentoa Archives, but I was unable to locate a post (s) that gives a positive final solution.
- Did just replacing the wiper motor itself solve problem (AM230-1003)
- Or is it necessary to replace the wiper motor assembly (230-1065) to solve the problem
I have contacted AM but it was difficult for the tech that I spoke to, give the answer to questions that I have posed above.
Thank you,
Robert “Clay” Claycomb
32-276
Deneige
We had this problem on our NT 32-238. It has AMEquipment coast-to-park wipers. After replacing the starboard wiper transmission, the starboard wiper continued to run after turning the switch "off". I noticed that if I depressed the wiper knob to actuate the washer, then the wiper would stop as it should. As I had very recently replaced the house battery bank, I guessed that the lessend drag of the new transmission and the additional voltage from the fresh batteries was just enough to speed up the wiper motor to over-run the "park" section in the motor, and the additional load from the washer pump dropped the voltage sufficiently to slow the motor. My remedy was to install four 3 amp diodes in series on the orange "coast-to-park" lead (one through three diodes did not drop the voltage sufficiently!). Apparently, overshoot occurs when the voltage on the park lead exceeds 12.5 Vdc. It has worked perfectly since 2021.
Harry Hungate
On Jun 14, 2025, at 3:07 PM, Robert Claycomb via Sentoa sentoa@lists.sentoa.org wrote:
Good morning
As the title indicates- my port wiper runs non stop, even with the toggle switch completely disconnected. . Obviously when I disconnect the Orange power wire at the actual wiper motors connector, the unit stops. With the port switch connected and the Orange wire connected , all functions operate except “Park” (or stop)
The middle and starboard wipers operate correctly.
My boat is a 2006 (32-276). The wiper motor AM 230-1002.
The wiper assembly is 230-1065.
The relay is Tyco #VF4A-41F11.
The system including the relays are stamped 2005.
Although not the issue, two of the wiper switches were literally just installed , “Carling Technologies, LW1A11Z-1165100- XCS1. 8A, 14v .
This week I bought 3 new switches. I had planned on replacing two of the switches , one with a broken toggle and the Port switch, as like most the Postings, I initially thought or maybe hoped that might correct the run away wiper. The third switch ( starboard) is original to the build date.
I have read through all of the available Sentoa Archives, but I was unable to locate a post (s) that gives a positive final solution.
- Did just replacing the wiper motor itself solve problem (AM230-1003)
- Or is it necessary to replace the wiper motor assembly (230-1065) to solve the problem
I have contacted AM but it was difficult for the tech that I spoke to, give the answer to questions that I have posed above.
Thank you,
Robert “Clay” Claycomb
32-276
Deneige
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