OK, so we changed it, now when we plug the sidecar in, two rows of lights come on that wasn’t on before (a row of all green and a row of all orangish-red). However, the motors still won’t turn.
Everything before used to work (the we could drive the robot and control it), then everything stopped working. So we realized it was some jaguar’s problems, and we switched it all with victors.
Now, we are measuring the voltage coming out of the digital sidecar and there is no voltage being produced.