Technical My experience with 500N Wiper Switch

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Technical My experience with 500N Wiper Switch

ChiapC

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Hey All,

I didn't find anything near what I'm about to talk about online, so I figured I'd share what I learned. This may be already somewhere here in the forum, but figured the more information the better. Unless I'm wrong, in which case feel free to correct anything I've stated incorrectly.

Long story short, my wiper's weren't working. Turns out the mechanism was toast too, but I couldn't even get the motor to move. After Peter (Bigvtwin996)'s recommendation, I removed the switch, as the switch is open and you can test everything.


It turns out my switch was just filthy, had over spray on it and had a bit of corrosion on it as well. I was able to take it apart as much as I could, clean it all and get it to work. Here is what I found if you want to test the switch, so you don't have to do this all yourself like I did.


The switch is clearly marked which wire goes where. 31 is the ground(black wires) + is this positive(duh) (grey wire) . I ran direct power and ground to those terminals to test the switch. While switching the wipers to "on", I had a test light on the "INT" terminal (would be the blue wire), which eventually showed power when the switch was on.


If you push the switch down, to the "Park" setting, (I believe it's to send the wipers back home, if they didn't stop there) the "C" terminal should have power. (blue with black stripe).

Behind the actual lever on the switch is a spring loaded plastic piece, that holds two "dumbell shaped" pieces that carry electrical current. If if you pull back on the spring towards the switch, you can easily remove the two dumbell things and clean them. They ride along the metal conductors inside the switch to transfer electricity.


After a little fiddling and cleaning, I was able to get it all working well. Except for the wipers, which need a whole mechanism. So I have a working wiper motor now.

I realize this information is probably only helpful to the 20 or so people on here with N's, but why not?!!?
 

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Well done for sorting out the switch---still-warm dragon poo is easier to find than one of these switches! A colleague of mine has an Abarth "Sperimentale" (only 3 were ever made, an experiment in streamlining) and his heater fan switch was of the same 'open' construction. It literally 'just fell apart' and a replacement of the same construction was 'not available' eventually I was able to find him a slightly later switch but of the 'encased' construction type--and with a chrome switch lever (all the later Fiat switches have black levers). From the driver's view-point you can't tell the difference.
 
Just wait for the eye-watering price of the replacement that was found :eek::eek::eek:
 
Indeed..... $145! But at least it was here in CA and I wouldn’t have to pay my usual arm and a leg for shipping from Europe! But I suppose I still need the wiper mechanism, so it’s a moot point!
 
I am one of the 20, so very helpful to me (apologize for the bare foot in the photo) !
 

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