ljcox said:
A very simple solution would be to connect a LED and resistor in series across the switch.
I assume that this is connected to power. Could you imagine connecting the switch in parallel with the battery supply? :?:
As soon as you flick it on, BOOM! there explodes your battery for forcing unlimited current from +ve to -ve. :shock:
If there was a resistor in series with the switch, the battery might not explode, but the resistor could heat up.
Think of the "globe" as a resistor. Measure the resistance with an ohmmeter or DMM, and connect it between base of an NPN transistor that can handle the current, and ground (-ve). Connect a resistor of a larger value between base and +ve. Connect collector to +ve.
Connect the emitter to the output (which will be an LED and a resistor). Don't forget to ground the other end of the output.
Now when the globe blows up, the resistance between base and ground goes to infinity, and the voltage at the base is significantly higher. This turns on the transistor, and turns on the LED.
If the globe didn't blow up, it's resistance and the resistance between base and +ve make a voltage-divider network, and the LED does not light very bright.
You need to experiment with the resistor connected to the base to get the best results.
I think the motor is a different story.