High / Low selection and the front ditch lights flash left / right when bell ( B key ) is pushed and of course stop flashing when you push the bell key again. They are available from the train-sim file library ( 3 files ) .....do a file name search for *brymac* and you will find them.
I did have a little issue and will get in touch with Tim to clarify if it is something I may have done...for my weird taste they appear a little way too bright and will tinker myself...but like I stated, for a Temporary fix....I think it's awesome....better than driving around in the dark I think....it is your decision alone..

Tim...you have a pm.

Low:
High: