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- #16
The switch is what sends power to the relay to tell it to close the high power circuit so your accessory turns on, that power can't originate from the relay itself.
The circuit breaker isn't strictly needed, but protects the rest of the electrical system from the non oem stuff you're installing.
The circuit breaker isn't strictly needed, but protects the rest of the electrical system from the non oem stuff you're installing.
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