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<blockquote data-quote="NIHL8ION" data-source="post: 8078698" data-attributes="member: 653120"><p>On Some Radios there is a blue wire with a white line, as well as a solid blue wire. That was more than likely the power antenna output which would only turn on the amp if you had it on source: am/fm radio. Connect to the solid blue wire and you should be good. What head unit are you running? Does it have a sub rca out, or just front / rear? If it DOES have a sub rca out and you are connected to that - It is possible that it&#039;s not sending the amp any signal through your RCA&#039;s due to settings in the menu of that head unit, check the settings... Next I would check output of the amp, if it has output, I would test and verify that the sub is connected to the speaker terminal &amp;amp; you can easily do this with a multi-meter on the terminal of your enclosure... You should get a 4 ohm reading (Or at least close to 4 ohms) - If you don&#039;t then it&#039;s likely that the speaker is not properly connected to the terminal inside of your box...</p></blockquote><p></p>

[QUOTE="NIHL8ION, post: 8078698, member: 653120"] On Some Radios there is a blue wire with a white line, as well as a solid blue wire. That was more than likely the power antenna output which would only turn on the amp if you had it on source: am/fm radio. Connect to the solid blue wire and you should be good. What head unit are you running? Does it have a sub rca out, or just front / rear? If it DOES have a sub rca out and you are connected to that - It is possible that it's not sending the amp any signal through your RCA's due to settings in the menu of that head unit, check the settings... Next I would check output of the amp, if it has output, I would test and verify that the sub is connected to the speaker terminal & you can easily do this with a multi-meter on the terminal of your enclosure... You should get a 4 ohm reading (Or at least close to 4 ohms) - If you don't then it's likely that the speaker is not properly connected to the terminal inside of your box... [/QUOTE]

Verification