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<blockquote data-quote="KaeZoo" data-source="post: 1378745" data-attributes="member: 554753">Adapting harnesses for Nissans usually have a black ground wire, but the wire often isn&#039;t present at the factory plug.&nbsp; My guess is that you wired up the harness, plugged it in, but didn&#039;t get ground because there was no ground wire on the factory side.&nbsp; So you attached the antenna, and the head unit grounded through the antenna and turned on (very common when there&#039;s no other ground connection).&nbsp; Afterwards, you bolted it back into place with the factory brackets, and the head unit worked fine because it grounded through the brackets.Think about it...the head unit doesn&#039;t know or care what car it&#039;s in, or if it&#039;s on a test bench.&nbsp; If you hook up both power wires and ground, it will turn on.&nbsp; If it didn&#039;t turn on, it&#039;s because one of the three wasn&#039;t present.&nbsp; When you plugged in the antenna, you supplied the missing component: ground.</blockquote>

[QUOTE="KaeZoo, post: 1378745, member: 554753"] Adapting harnesses for Nissans usually have a black ground wire, but the wire often isn't present at the factory plug. My guess is that you wired up the harness, plugged it in, but didn't get ground because there was no ground wire on the factory side. So you attached the antenna, and the head unit grounded through the antenna and turned on (very common when there's no other ground connection). Afterwards, you bolted it back into place with the factory brackets, and the head unit worked fine because it grounded through the brackets. Think about it...the head unit doesn't know or care what car it's in, or if it's on a test bench. If you hook up both power wires and ground, it will turn on. If it didn't turn on, it's because one of the three wasn't present. When you plugged in the antenna, you supplied the missing component: ground. [/QUOTE]

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