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Car Audio Help
Wiring, Electrical & Installation
Line out from Factory RF amp Nissan Titan
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<blockquote data-quote="keep_hope_alive" data-source="post: 8653888" data-attributes="member: 576029"><p>I'm trying to follow your logic here. A diagram would be faster to interpret your meaning. </p><p></p><p>Are you changing speakers or just adding amps? It changes the answer. </p><p></p><p>First step is to find a wiring diagram for your vehicle and the pin-out diagram for the amp harnesses. You may need to pay a one-time fee for a day access to a service technician website to get this info. You also need to determine what the signal is into the amp and what the amp does to that signal (it may add EQ, it may add crossovers, it may add delays, it may add chimes, it may add microphone noise cancelling, etc.). </p><p></p><p>You need to know if the tweeters are amplified separate from the woofers. It is common for factory systems to have a small capacitor on the factory tweeters, which changes the wiring requirements. You can verify this by looking at the tweeters and reporting back. You can remove each of the speakers to look at the wiring colors then look at the factory amp and match colors with pin locations. You can also look at the head unit wiring and match that to the amp input harness. You can use a DMM to measure the output voltage from the head unit and look to see if you can just bypass the line output converters and use a cleaner signal before the amp. </p><p></p><p>You can see a process I did for determining how to interface with a 2017 Malibu here:</p><p></p><p><a href="https://www.chevymalibuforum.com/forums/137-modifications-generation-9/92681-2017-lt-factory-radio-frequency-response-4.html#post783545" target="_blank">https://www.chevymalibuforum.com/forums/137-modifications-generation-9/92681-2017-lt-factory-radio-frequency-response-4.html#post783545</a></p><p> </p><p> </p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8653888, member: 576029"] I'm trying to follow your logic here. A diagram would be faster to interpret your meaning. Are you changing speakers or just adding amps? It changes the answer. First step is to find a wiring diagram for your vehicle and the pin-out diagram for the amp harnesses. You may need to pay a one-time fee for a day access to a service technician website to get this info. You also need to determine what the signal is into the amp and what the amp does to that signal (it may add EQ, it may add crossovers, it may add delays, it may add chimes, it may add microphone noise cancelling, etc.). You need to know if the tweeters are amplified separate from the woofers. It is common for factory systems to have a small capacitor on the factory tweeters, which changes the wiring requirements. You can verify this by looking at the tweeters and reporting back. You can remove each of the speakers to look at the wiring colors then look at the factory amp and match colors with pin locations. You can also look at the head unit wiring and match that to the amp input harness. You can use a DMM to measure the output voltage from the head unit and look to see if you can just bypass the line output converters and use a cleaner signal before the amp. You can see a process I did for determining how to interface with a 2017 Malibu here: [URL="https://www.chevymalibuforum.com/forums/137-modifications-generation-9/92681-2017-lt-factory-radio-frequency-response-4.html#post783545"]https://www.chevymalibuforum.com/forums/137-modifications-generation-9/92681-2017-lt-factory-radio-frequency-response-4.html#post783545[/URL] [/QUOTE]
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Line out from Factory RF amp Nissan Titan
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