My guess would be that cable insulation was rubbed open, likely in the area around the steering head where things move around. When water gets into it wires get shorted. I have had a few issues like that with my bike as well. Undo the zip ties and carefully examine your cable harness.
Have fun. These types of glitches are a b*tch to find.
The Red Rocks
2004 R1150GS ADV parked in Heidelberg