Most Helpful Member
I need some 12V Grain of Wheat lamps for replacement in a radio I am rebuilding. I think that model train buffs use these.
Because it could be an essential part of the circuit.Why not wire in a little LED and dropping resistor? Save you from having to replace the incandescent when it burns out.
Grain of wheat lamps are often used as PTC resistors in things like wien bridge oscillators; if you replace it with an LED it might not work.