@gunrunnerjohn posted:Many LED's probably wont light with a single AA cell. I'd use a 9V battery with a 1K resistor in series, that will light any common LED. The fact that the PCB is obviously missing means they're probably just bare LED's in there.
Good point, I was leaning to bulbs…as I thought it was mentioned. I have a 9v with resistor and alligator clamps for testing.