These push buttons are perfect for their purpose. I ordered 3 different colors - red, green and blue. Blue has a different button feel and the harness is wired differently and the pin arrangement is different. Compared to the wiring of the other two buttons, the green and yellow wires on the green button are reversed. I assumed that each of the buttons would have the same wiring and connected them as such, but when I test-connected everything I found that the green button didn't work. I had to cut the yellow wire and connect it to the green one to make it work. This lack of consistency can be very frustrating, whether you're wiring just a few keys or even more if you're doing this type of work on a regular basis. Conclusion: Don't trust the wire colors. Use a multimeter to check how each button should be set. To be on the safe side, connect the button to the wire harness and label each component to avoid confusion during installation. These buttons were used in conjunction with the Adafruit sound card to replicate Marc Robert's horn in my cars.
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