Light Bell Horn Air Release/Acc1 on or off Coupling Brake release/Squeal Dynamic Brake Air Hose/Uncoupling Lever Shut Down/Notch Down Fan/Notch Up Rail Clack loco Sound Prime MoverType Air release/ Acc2 on or off Coupling 2 Air Pump Loco Sound Flange Noise 1 Bell Type Horn Type Loco Sound Bell Volume Horn Volume Prime Mover Volume Air Release Flange Noise 2 Safety Valve Pop Sand Drop Ditch Lights Flash Linear Slow increase at slow speed Fast increase at slow speed Normal Headlights Off / Dim / Bright Cycle Rule 17 Auto notch - RPM and notch synchro to speed Manual notch - notch down/up with F8/F9 Type 1 Type 2 Off Range 0-2 (2 types - 2=diesel sound off) MRC