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Showing results for tags 'rear wiper'.
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Hi All, This is a long shot, but does anyone have any information about the wiring for the rear wiper motor on a 9N3? (it's a 55 plate if that matters) Mine hasn't worked for years and I finally got around to looking at it yesterday. Long story short, there is a small circuit board on the wiper motor that's dead. I've driven the motor on a bench from a supply and know it works fine, and I've seen with a voltmeter that the car is sending a signal to activate the wiper, and power. I guess I've got three options, Replace the whole thing. Bit loathed to do this as it's only the circuit board that's bad, and I don't have a great history buying car bits. Build a circuit to replace the dead bit. Ignore it and leave it dead. (As half of the rear heated window doesn't work it's not a brilliant option) I'm interested in making a replacement circuit as I can do it fairly cheaply, however I don't know what all the pins on the connector do. There's a 4-pin plug connecting the motor. Giving the connector pins arbitrary numbers the pin-out is like this, pin 1 - ground pin 2 - ??? pin 3 - 12V pulse when turning on the wiper or 12V constant when activating wash pump pin 4 - 12V constant Does anyone know what 'pin 2' is for, or the kind of signal that is expected here? I've spent ages on Google and found very little at all, only that it's a signal going to the car computer but no idea what it does. Can anyone help please?