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<blockquote data-quote="jondavidf" data-source="post: 8667386" data-attributes="member: 676420">Hey all!Ok, so I&#039;ve been out of the car audio and electronics game for just a bit.... I used to be an installer at Circuit City if that tells you how long it&#039;s been, but I do remember some fundamentals.So here&#039;s my story:  I am building a small system for my 16 y/o son&#039;s &#039;98 Altima.  I plan to put a single 12&quot; sub in a rear facing box with rear panel that will snug up against the back seat.  I ended up with a couple extra pairs of speakers (don&#039;t ask...) and am thinking of mounting them on that back panel.  The issue is I really only want them to be on when the trunk lid opens.  I figure I can use an amp (audio source) and relays to reroute the audio from the internal speakers to the ones mounted in the trunk. This is my idea:Use a normal 5-pin relay to switch audio from an internal speaker (Speaker #1) to an external speaker (Speaker #2).  The power source for the relay will be tied to a hood pin switch mounted in the trunk.  Then I&#039;d wash, rinse, and repeat for each speaker I want to switch.  See attached image for a visual of the wiring setup.My questions are:1 - Do you think the above would work?2 - If so, would I get noise through the audio by running the sound voltage through a relay?3 - Is there anything like this already available on the market?4 - Would there be any issues if I just switched (through the relay) the positive for each speaker while running the negative straight to the amp?Thanks for the help!Jon[ATTACH]4105[/ATTACH]</blockquote>

[QUOTE="jondavidf, post: 8667386, member: 676420"] Hey all! Ok, so I've been out of the car audio and electronics game for just a bit.... I used to be an installer at Circuit City if that tells you how long it's been, but I do remember some fundamentals. So here's my story: I am building a small system for my 16 y/o son's '98 Altima. I plan to put a single 12" sub in a rear facing box with rear panel that will snug up against the back seat. I ended up with a couple extra pairs of speakers (don't ask...) and am thinking of mounting them on that back panel. The issue is I really only want them to be on when the trunk lid opens. I figure I can use an amp (audio source) and relays to reroute the audio from the internal speakers to the ones mounted in the trunk. This is my idea: Use a normal 5-pin relay to switch audio from an internal speaker (Speaker #1) to an external speaker (Speaker #2). The power source for the relay will be tied to a hood pin switch mounted in the trunk. Then I'd wash, rinse, and repeat for each speaker I want to switch. See attached image for a visual of the wiring setup. My questions are: 1 - Do you think the above would work? 2 - If so, would I get noise through the audio by running the sound voltage through a relay? 3 - Is there anything like this already available on the market? 4 - Would there be any issues if I just switched (through the relay) the positive for each speaker while running the negative straight to the amp? Thanks for the help! Jon [ATTACH]4105._xfImport[/ATTACH] [/QUOTE]

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