Re: 23 series windshield wiper assembly?

Posted by HH56 On 2016/1/25 12:49:38
As far as testing, the easiest would be to hook up a blower motor and battery and see how the motor responds. You might be able to check with an ohmmeter but 6v resistance is very low -- on the order of less than 5 ohms -- most likely around 2 so it could be difficult to read the difference between good resistance and a plain short with a typical volt ohm meter.

Unless you have a spare motor, with the heater still in the car it is a bit more difficult but with a couple of lengths of wire it can be done. Make sure the wire is same gauge Packard used --16ga I think -- and connect the battery hot wire to the B terminal, motor to M. The other lead on the motor should be grounded to one of the screws on the case or firewall.

The switch should have 3 positions -- off, low, and high. I think it is in that order but it could be off, high, low. Each time the button is pressed it will change and will repeat the cycle if pressed more than 3 times. If the resistor is good there will be a low speed. If there is no speed difference, a likely short. If motor doesn't work at all in one of the pressings the resistor is bad or somehow disconnected. When on low speed the resistor will most likely get quite warm so be aware of that.

If one position does not work, I can't see enough detail in the photos to make a suggestion. I think those discs are resistors but need to see a bit more detail on how the connections are made. If it gets to that point could you post photos 5, 6 and 10 again in a large enough file size they can be enlarged?

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