I am trying to operate a vintage 6 vdc siren from my 12 vdc boat system. It's got what looks like 16 ga wires on it, and a motor about 3" diameter, so I'm guessing it might draw like 10 amps (is there a way to be more accurate?). There are plenty of 12-6 volt converters, and I was about to buy a 15 amp one when I read a comment from someone very technical who said the INPUT draw spiked the rest of their 12 vdc circuit and "fried" some sensitive electronics. I have several sensitive pieces of equipment (engine computer, and others) on my main 12vdc circuit, so this has scared me a little. I don't need to hit the siren and have everything die! Is there a device or a way I can make sure my 12 vdc circuit remains stable when I hit the siren?
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