Knowing the pin positions would be very helpful.
While I am familiar with Arduino and ESP8266s and could help program them to display the tune on a lcd or oled, what I am really interested in is being able to disable the up/dn buttons with a DPST switch. Set it to NS, flip the switch hidden under the dash, and then see if anyone can figure it out.
@Getslideways, if you decide to tackle this, I am willing to help, but most of my limited experience is with the WeMos D1 Mini.
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