I have a Honda timing light part # 0132-99908. Does anyone know how it works? Motocrazy?

I have a Honda timing light part # 0132-99908. Does anyone know how it works? It has a 120v plug on it, does it plug in the wall outlet or another Honda instrument? If so do you know what that item that it plugs into look like, part # etc.
Thanks, Motocrazy

Added (1). This is a vintage timing light.

If you don't know how to use it, then return it.

It plugs into a 120 volt wall or extension cord receptacle. There should also be another wire which connects to the number one plug wire as a trigger to the strobe light.