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Car Audio Help
Wiring, Electrical & Installation
Switching audio speakers when trunk opens
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<blockquote data-quote="keep_hope_alive" data-source="post: 8667808" data-attributes="member: 576029"><p>You'll need to switch both positive and negative since they are routing to different speakers. You can get two-pole relays or four-pole relays to simplify wiring but they are more expensive. They can include relay bases so wiring is cleaner. </p><p></p><p>The flyback diode is mostly when you're powering the relay coil from a circuit (op-amp, transistor, timer, etc.). When I control relays from custom circuits, I use the diode. When powering from a car's 12VDC, the quenching diode isn't necessary (but it can't hurt).</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8667808, member: 576029"] You'll need to switch both positive and negative since they are routing to different speakers. You can get two-pole relays or four-pole relays to simplify wiring but they are more expensive. They can include relay bases so wiring is cleaner. The flyback diode is mostly when you're powering the relay coil from a circuit (op-amp, transistor, timer, etc.). When I control relays from custom circuits, I use the diode. When powering from a car's 12VDC, the quenching diode isn't necessary (but it can't hurt). [/QUOTE]
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Car Audio Help
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Switching audio speakers when trunk opens
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