The ditch lights cycle though a few states...
Off, off until horn blows and then oscillate, on and oscillate with horn, always on.
You just need push the on and off buttons for ditch lights to cycle through them.
As bigdodge said, tapping AUX2 will toggle the headlights. Push and hold will bring up the menu for expanded lighting functions.
The flashing looks like it maybe a signal issue.
