Greetings, folks! I need easy, visual confirmation of the continuity of a resistance wire-based heating element circuit (~80W, 12VDC): it is simply a loop of Nichrome resistance wire (with a fuse!) connected to a 12VDC battery bank. If the circuit breaks somewhere, I need to know ASAP--that heat is essential! As I am completely off-grid on a solar-panel system, I also need to minimize the additional loading of the circuit. Incorporating a single LED would be ideal: cheap, tiny (size and draw), reliable, and visible in all lighting conditions. (The LEDs I currently use are each 12VDC, in series with a 750-Ohm 1/4W resistor.) I don’t need any other information; I only need to know if current is flowing through the circuit! My challenge is: - the LED must be on one side or the other (high or low) of the load. If it were to span the load then it would simply be in parallel with the load and would be illuminated even if the resistance wire of the heating element breaks, and - I can’t put the LED directly in series with the load! ;-) A cheap DC multimeter would tell me the current going through it, but it doesn’t light up and I only need to know if any current is going through it! Thus I assume some form of shunt is necessary. I am considering a 100-Watt, 750-Ohm resistor in parallel with the LED (and its resistor) on the low side of the load as the only practical solution. My assumptions regarding the resistor: The 100 watts is to allow for the full current passing through the heating element. The 750 ohms is to force enough current to pass through the LED (and its 750 ohm resistor) so that it illuminates. Is this a functional solution? Is it the most practical and reliable solution? Is there a cheaper solution? Thoughts? Please forgive my ignorance and thank you for being such a valuable resource of information! Thanks!!