I doubt if there are any videos showing this.
In the config.txt of this locomotive should be a reference under "effects", where all coronas and lights/ditch lights etc. are listed under for example an attachment point called a.ditch or similar where one either inserts these extra lines as per the DevWiki page in the link above or, if this is already there, one can change the numbers there. If that number says 1, this is the normal flashing frequency speed, 0.5 is half and 2 is twice the speed, 3 is 3x and so on. Any other decimal number change is in between these numbers, like 0.8, 1.6 or 2.3 or such.
With ditch lights in TS12 when in Driver, one can either switch these off, on at low beam and also high on high beam and also either flashing off or on. I don't know if this is also in TS09 or TS10, as you only have TS09.
Cheers
VinnyBarb