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Car Audio Help
Wiring, Electrical & Installation
Wiring amp for all speakers with a cutoff switch
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<blockquote data-quote="keep_hope_alive" data-source="post: 8205327" data-attributes="member: 576029"><p>to describe in more detail:</p><p></p><p>you don't want the head unit remote output to be responsible for all of the current necessary, so you'll start with a relay for remote turn-on.</p><p></p><p><img src="http://www.the12volt.com/12voltimages/addremacc.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>the blue lead (pin 30) in the image above will be +12V power for the amp(s) and relay coils.</p><p></p><p>you can tie pin 87 to the head unit ignition wire (also red).</p><p></p><p>now for the speaker relays:</p><p></p><p>pin 85 and 86 are for the coil.</p><p></p><p>wire each pin 86 together to the +12V lead. keeping this blue makes sense.</p><p></p><p>wire each pin 85 together and wire to ground. keeping this black makes sense.</p><p></p><p>wire each pin 30 to a speaker. since the relays will be in pairs, one 30 goes to speaker (+) and one 30 goes to speaker (-)</p><p></p><p>wire each pin 87a to the head unit output. similar to above, one relay for (+) and one for (-)</p><p></p><p>wire each pin 87 to the amplifier output. similar to above, one relay for (+) and one for (-)</p><p></p><p>use a standard BOSCH style 5-pin relay but make sure it has 87 and 87a contacts. If you get a relay socket it helps with wiring and saves time.</p><p></p><p><img src="http://www.parts-express.com/data/default/images/catalog/240/330-079_HR_0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><a href="http://www.parts-express.com/12-vdc-waterproof-5-pin-bosch-style-relay-spdt-30-40a-with-metal-bracket--330-079" target="_blank">12 VDC Waterproof 5-Pin Relay SPDT 30/40A with Metal Bracket | 330-079</a></p><p></p><p><img src="http://www.parts-express.com/data/default/images/catalog/240/330-075_HR_0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><a href="http://www.parts-express.com/12-vdc-5-pin-relay-socket-for-bosch-type-relay--330-075" target="_blank">12 VDC 5-Pin Relay Socket For Bosch Type Relay | 330-075</a></p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8205327, member: 576029"] to describe in more detail: you don't want the head unit remote output to be responsible for all of the current necessary, so you'll start with a relay for remote turn-on. [IMG]http://www.the12volt.com/12voltimages/addremacc.gif[/IMG] the blue lead (pin 30) in the image above will be +12V power for the amp(s) and relay coils. you can tie pin 87 to the head unit ignition wire (also red). now for the speaker relays: pin 85 and 86 are for the coil. wire each pin 86 together to the +12V lead. keeping this blue makes sense. wire each pin 85 together and wire to ground. keeping this black makes sense. wire each pin 30 to a speaker. since the relays will be in pairs, one 30 goes to speaker (+) and one 30 goes to speaker (-) wire each pin 87a to the head unit output. similar to above, one relay for (+) and one for (-) wire each pin 87 to the amplifier output. similar to above, one relay for (+) and one for (-) use a standard BOSCH style 5-pin relay but make sure it has 87 and 87a contacts. If you get a relay socket it helps with wiring and saves time. [IMG]http://www.parts-express.com/data/default/images/catalog/240/330-079_HR_0.jpg[/IMG] [URL="http://www.parts-express.com/12-vdc-waterproof-5-pin-bosch-style-relay-spdt-30-40a-with-metal-bracket--330-079"]12 VDC Waterproof 5-Pin Relay SPDT 30/40A with Metal Bracket | 330-079[/URL] [IMG]http://www.parts-express.com/data/default/images/catalog/240/330-075_HR_0.jpg[/IMG] [URL="http://www.parts-express.com/12-vdc-5-pin-relay-socket-for-bosch-type-relay--330-075"]12 VDC 5-Pin Relay Socket For Bosch Type Relay | 330-075[/URL] [/QUOTE]
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Wiring amp for all speakers with a cutoff switch
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