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How do I make led's come on on different voltages? Answered

I'm busy making a station for my solar power and have 3 different  solar systems I want to put on the same station
I want to putt 3 leds on each system to show empty, loading and full
any ideas on how to create a circuit that illuminates one led on below 10vdc, one between 10vdc and 14vdc and one on 14vdc and above




Figure 6.

Come on, you have to help us out. What do you know about electronics? We have to know where we can start, before we go rattling off information that might be useless to you.