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<blockquote data-quote="mtlhead" data-source="post: 2968323" data-attributes="member: 568297"><p>So I&#039;m not exactly sure what happened but when I installed a headunit (Premier 6900) in my cousin&#039;s mustang with the mach audio system, the rear midbasses quit working.&nbsp; I wired everything correctly...at least I thought I did.&nbsp; All the stock harness wires were connected to the aftermarket wires correctly (speaker wires, dimmer, remote, power, ground...ya know) and the only thing I can think of is this: There was another harness for the amps...which converted it to an RCA connection, so I plugged it into the rear output, since we have a Diamond D3 amp running the front speakers (Alpine Type S).&nbsp; Everything powers on fine...except the only thing that doesn&#039;t work are the rear midbass speakers (which he does want running), the tweeters in the rear ARE working...and I have no idea what is wrong, I don&#039;t really have any experience on the mach systems and how they work, but any input is appreciated.</p></blockquote><p></p>

[QUOTE="mtlhead, post: 2968323, member: 568297"] So I'm not exactly sure what happened but when I installed a headunit (Premier 6900) in my cousin's mustang with the mach audio system, the rear midbasses quit working. I wired everything correctly...at least I thought I did. All the stock harness wires were connected to the aftermarket wires correctly (speaker wires, dimmer, remote, power, ground...ya know) and the only thing I can think of is this: There was another harness for the amps...which converted it to an RCA connection, so I plugged it into the rear output, since we have a Diamond D3 amp running the front speakers (Alpine Type S). Everything powers on fine...except the only thing that doesn't work are the rear midbass speakers (which he does want running), the tweeters in the rear ARE working...and I have no idea what is wrong, I don't really have any experience on the mach systems and how they work, but any input is appreciated. [/QUOTE]

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