Hello and welcome in the forum
or have you a pilot light ?
EDIT :
I just saw that “pilot light” may not mean what I want.
I’m talking about a simple flashlight with 2 wire. when you put the 2 wires in contact, the light comes on.
since childhood I have always seen my father with his made, and I made one too, very easy to do and very practical. Exactly in the situation you found yourself in