I'm a bit miffed as to how this display operates. This display is used in a DC shunt milliampmeter.

The display is connected by two wires, connecting the anode and cathode of a mini LED. The LED is mounted to a plexiglass screen with a matrix of dots displaying three digits. Can anyone explain how this works?

Here are pictures:

https://jvcmarine.shutterfly.com/pictures/9#11

https://jvcmarine.shutterfly.com/pictures/9#10

https://jvcmarine.shutterfly.com/pictures/9#9

 

The 2 wires are just the backlight..
pop off the PCB screws and you will see the rest of the display.