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Water Rocket 2-Stage Mechanism
Not the main fan but the condenser motor wire is what you should search for. Otherwise your solenoid would stay open if you ever turned the circulation fan on but didn't have the AC running or if you turned on the heat for the winter.
Did you find a schematic like the one in the picture I added to my comment when I replied? Unfortunately HVAC guys only sometimes care about color standards... Most just slap in whatever wire works. On occasion manufacturers like to change it up as well making it difficult to say which wire you're looking for unless you can find a diagram and the screw terminals to identify which is which.
You may want to open up your furnace and look for a wiring diagram like the one attached to this comment. If you look to the left center of the picture you will see the room thermostat and outdoor unit connections. I believe the Y is yellow and the C is black (though my wiring colors didn't match those) and those two are the wires running outside for the A/C unit. Once you find the wire colors inside you can go out to the unit and look for the same colors. Hopefully those are the ones you will need to tap.
Wow! That looks awesome! The two wire ordering shouldn't matter since the current is alternating (AC) as opposed to direct (DC). With AC the positive and negative polarity are switching 60 times per second in the US and 50 times per second in most of Europe so you can connect either wire to either terminal on most AC devices. Good call on disconnecting the power, never can be too careful. I also love how easy yours would be to remove in case you need to repair the A/C in the future.
I tried a few different iterations but then got distracted and left it half intact. My recommendation is to use smaller personal misters rather than garden misters as they disperse the water into smaller drops.
To be completely honest, I haven't tried this in years. It might work but I've been tempted to take down the article until I could verify it. I can't imagine the desktop files would have changed that much but there might be a few minor tweaks that need to be discovered.
Yeah, you should be able to in step 6 by replacing the chromium line in /usr/share/xsessions/chromeKiosk.sh with your own application.
If I recall correctly (and it's been years so I may not), you don't put anything in and it will prompt you for it as you boot up the system on each new machine.