3-wire strain gauge - HX711 Issue

Chagrin:
One white and one black (from different strain gauges) should be E+ and then the remaining white and black to E-; your two red wires should go to A+ and A-. There's no need for those resistors.

Exactly right, you must connect it this way - it forms the proper bridge to give compensation and sensitivity (but you can exchange the E+and E- with the A+ and A- for exactly the same effect). And there is a clever way to connect four sensors as well.