Quote:
Originally Posted by nighterfighter
Not sure if they make these, but a LED, where if given regular polarity (Set the Spike forward) one color, and if given reverse polarity, it is a different color. (Set relay reverse.) No color = off, or circle, for example.
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Two options, run the circuits off of the digital sidecar if you have low milliamp requirements for your LEDs
Other option (I am not entirely sure if custom circuits on spikes are legal) but they are LEDs aka Light Emitting Diodes with Diodes being the key word
If you run - to anode and + to cathode it doesn't light up, so you have one wire come off the positive side of the spike, branch into two wires, one is connected to an anode of an LED the other to a cathode of another LED, continue connecting LEDs in the same direction (+-anode cathode-anode cathode-anode cathode-) and the opposite direction. Run the spike one way it turns on one set, the other way it turns on the other set.
While you generally have to apply high voltage reverse polarity to damage an LED, some are damaged more easily than others, in which case buy an actual diode that can handle the higher voltage reverse polarity and stuff that in there to avoid burning out your LEDs