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Old 07-23-2017, 09:35 PM
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Join Date: Jul 2016
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Front Passenger Window Switch Pinouts---What Does What? ('81 300D W123)

So, until I get a replacement passenger-side front window switch (cheapo replacement by PO quit working and the plastic fell apart in my hands), I was thinking I could use some alligator clip jumper wires to at least be able to operate the windows until I get the switches (no A/C and mid-Summer, ya kinda need the windows!). See the photo of my pinouts, with the top being the front passenger switch and the bottom the rear passenger.


A check of my "A Prospero Garage" wire diagram shows that green/yellow is UP and white/black is DOWN for the front window, and green/red is UP and white/blue is DOWN. That's great, but...which frickin' pinouts are which? Since the wires come from one side of the switch connector, it isn't real obvious which ones are which, so...I don't really want to start touching wires together randomly for obvious reasons. My assumption is all I have to do is touch the pinout needed to (for example) lower the window with the ground pinout, and that will complete the circuit and perform the same function as a switch would. Basically, I'd jam the nose of two alligator clips into said up or down pinouts, and also one for ground. Then, simply attach an alligator clip wire between the two needed loose ends of the clips to perform whatever function needed (raise or lower). Should work...but I've yet to find which pinouts are which.

Hope you can help!
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