330 DA Windshield wiper diagnosis?

Robillard

New Member
Jun 22, 2012
43
Santa Cruz, CA
Boat Info
330 Sundancer 1998
Engines
Twin 454 Mercruisers, V-drives
I have a 1998 330 Sundancer, and recently needed my windshield wipers, only to find that while the port one works fine, the stbd does not work. When I flip the switch, it does not come on.

Seems to me it could be either the switch at the helm, or the motor. Anything else it could be?

I'm handy with a multimeter, just not sure how to gain access to the motor, anyone know?

Once I have access, are there simply two terminals, and I check for whether there is a voltage present? What voltage should I see?

Seems that if there is sufficient voltage present at the motor, then replace the motor, otherwise check the switch, right? In checking the switch, presumably I disconnect the switch and check the resistance: should be no or minimal resistance when engaged.

Have I got all this right?
 
You can access the wiper motors by moving the salon light lenses in the ceiling. The motors will be right there. To eliminate the switch as a cause you may want to remove the switch panel & swap the wires on it to see if the wiper functionality reverses.

Todd


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