NIR Hunslet prototypical behaviour

[murphaph]

Does anyone know if the radiator fan on the Hunslets ran independently of the prime mover? I would have expected it to be able to run on after the prime mover had switched off to prevent overheating after shutdown. Did the fan operate at varying speeds? How slow did it go?

What would the normal order of operations have been for the lights?

Driver enters cab, switches on cab lights (assuming it's dark), then the marker lights and then the headlight?

If running light engine would the red marker lights come on simultaneously with the white ones or come on a moment later after the white marker lights?

When a driver changed ends, did he have to shut down the loco to take his key with him to the other end, or was it possible to change ends without shutting down the prime mover?

I'm tinkering with the sound settings on my Loksound at the minute, hence the questions. Appreciate any help