A buddy has a custom trailer with led lights (brake, reverse, etc) that he tows to events and is trying to figure out how the boat dealers make the lights strobe/flash at boat shows. I always thought they did it with relays, but am not sure. Does anyone know how the dealers make the trailer led's strobe/flash (without adding one of those auto specific kits that you can buy)?...i figure they use a deep cycle battery for power, but am not sure what else they do. Thanks for any help.
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