Eric T. wrote:
> * To control a latching relay with only 1 wire, use a dual coil relay. 
> Hook one end of one coil directly to 12 volts. Hook one end of the other 
> coil directly to ground. Connect the other ends of both coils through 
> your 1 wire to the center pole


Then you have a connection all the time from one 
coil positive to the other negative, don't you?

Both would stay on all the time, wouldn't they?-Ken

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