Heres an example https://www.youtube.com/watch?v=OV4BNBEhdjk
One of the "patterns" on the Whelen UFM8 flasher is "traffic advisor". Selecting this pattern puts the flasher into arrow mode. The lighthead selector wires become Left, Right, Flash, and when combined center out. You cannot make any changes to the traffic arrow pattern itself, so you get what you get. If you have a 6 head bar you double up the ...
