new 2 voltage comparator diagrams

Spikeneeds2no said:

having trouble going from wiring diagrams 2 comparator pin diagrams. when I look at a wiring diagram I understand posative\negative, input and output and such. Those go in and out at the corners of the triangles but my diagram has 2 wires going in\out between the corners. On the comparator pin diagram would that be pins 3 and 12 respectively? And if that is so then where does power come out? pin 1 or 14 Am I even on the right track. I'm using a lm339 and am trying to design a 12 volt photoeye to run a relay for nighttime rewind mode on a homemade solar tracker.

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