CLP-
I understand to not "work with the minis." They are a bear to solder. My LCD 3's were purchased a few years back when they included a four (4) pin XRL as well.
To me, it seems weird that two (2) pins of the minis need to be linked together for the positive and negative terminals of the LCD 3's transducers.
When I get some moments, gonna' carefully remove the outer screens and test continuity
from the transducers to the male pins. My guess is that it will reveal the two pins necessary and negate needing to "short" pins 1 and 4 and 2 and 3.
In the mean time...