I'm an electronics novice looking for some help. I'd like to design what I think would be a simple circuit for you folks. I'll do my best to describe what I'm trying to do. I use 1/4 w 10ohm resistors to light fireworks electronically from a safe distance (approx. 100' of18 ga stranded wire) by hooking them up to a 12v car battery. I've been doing this with a simple momentary contact switch that I hold for about 1-2 seconds until the resistor burns up and lights the fuse. Having noted that the resistor has zero resistance after it burns up, I thought I could make something more sophisticated.
What I'd like to do is somehow have an LED in-line that is lit (or green) when the resistance is > 10 ohms and the LED would go off (or turn red) when the resistance is zero (or say below 1 ohm). This way I could tell not only if my cue is attached, but I'd also know if it has been fired. I think having the green/red would be better than on/ off because I could tell if a cue was attached or not.
I know enough (and have the tools) to put together this circuit, but don't know enough about how to design it. Any input on this would be appreciated!