No brake squeal with the brake button on either the CAB1 or CAB2.
OK, we know the cam/microswitch is working because the primer mover RPM sounds go up and down as speed increases and decreases. I reseated all three boards. All connections are snug. All TMCC and RailSounds functions work normally with both the CAB1 and CAB2--except there is zero brake squeal with the brake button or throttle with either.
Could Sherlock Holmes solve this mystery?
Keith