hi everyone. Let me start off by saying what I'm trying to do.
I am trying to turn a light on. When I tap my high beams on my car. That will send a quick 12v pulse to a relay that I want to keep on so the light will stay on. The only way to turn it off should be the turn off the car. Now I had someone draw me a circuit it seems like it will work but I have two questions. Can I have a common ground? Like in the picture in red. And he put in a second diode. I really don't understand the purpose of it being there. I get the first diode so 12v doesn't flow the wrong way. It should work fine without the second diode and have nothing there at all?
Hopefully I have explained what I am trying to do.
Thanks
I am trying to turn a light on. When I tap my high beams on my car. That will send a quick 12v pulse to a relay that I want to keep on so the light will stay on. The only way to turn it off should be the turn off the car. Now I had someone draw me a circuit it seems like it will work but I have two questions. Can I have a common ground? Like in the picture in red. And he put in a second diode. I really don't understand the purpose of it being there. I get the first diode so 12v doesn't flow the wrong way. It should work fine without the second diode and have nothing there at all?
Hopefully I have explained what I am trying to do.
Thanks
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