My goal was to create a programmable scale for weighing objects, parts counting, even directing product flow on a conveyor system.
I needed a load cell, a Arduino, and an amplifier.
Step 1: The Load Cell
Red: Excitation +
White: Signal +
Green: Signal -
Black: Excitation -
This matches the GSE / NCI / Sensotec wiring scheme.
I disconnected the 4 wires from the control board in the scale, so they would be available for the next step.
Step 2: The Amplifier
Data Sheet: http://www.ti.com/lit/ds/symlink/ina125.pdf