Alternating electronic flasher / wig wag flasher
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Particularly useful when participating in parades, a
wig wag flasher is a nice addition to a police model.
CEC Industries makes a nice little alternating electronic flasher that operates a
wig wag pattern: alternately illuminating the left and then right spot light (or other lights as desired). The part number is EF30WW. This unit is very easy to wire and requires no separate ground connection. To date, I've found it very reliable.
With a little extra effort and wiring, it is easy to introduce a toggle switch that will switch between off, normal spot light operation (both on all the time), and alternating
wig wag flashing. I like to use a Dual Pole, Dual Throw (DPDT) toggle switch with on-off-on functionality.