Is it possible to switch-on the red marker lights above the windshield when operating in push mode for end-of-train realism? If there is a way, I can't figure it out.
There should be a switch on the back wall of the cab. Next to the switches for number board lights, isolation-run prime mover switch etc.
Yes, there is a switch for it, but the problem is that you need the time before departure to set up your reverser, brake etc. It takes about a minute to run to the pushers cab, set the markers on and run back to the cabcar. You will be departing a bit late, but it's still possible to catch up that delay.
Or you could do either one of these: Use the rear camera to flip the switch. Use the crtl key (can‘t remember the exact key combination; it‘s crtl and one of the keys to the right of 0 I believe) to switch cabs to the F40, flip the switch, use crtl combination again to get back in the cab car.