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Help with grounding head unit.
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<blockquote data-quote="Shadowborg" data-source="post: 8634456" data-attributes="member: 674009"><p>I meant it must be grounded through the antenna wire because it was functioning with the actual ground wire disconnected. I confirmed this by unplugging the antenna wire and it wouldn't turn on. Then I'm thinking maybe I'll just leave the antenna wire unplugged and try to connect only the ground wire. Same noise. I tried wrapping a wire around one of the RCA jackets and touching it to the new ground wire I ran earlier. Noise got worse. I checked the resistance of the amp ground again and it actually read -0.09. is negative resistance unusual? I will try checking the voltage difference next. Again sorry if any of this sounds dumb, total newbie. Oh and the car is a 2002 grand marquis btw.</p><p></p><p>EDIT: Voltage between amp power and ground: 13.5</p><p></p><p>Voltage between batt pos and neg: 13.59</p></blockquote><p></p>
[QUOTE="Shadowborg, post: 8634456, member: 674009"] I meant it must be grounded through the antenna wire because it was functioning with the actual ground wire disconnected. I confirmed this by unplugging the antenna wire and it wouldn't turn on. Then I'm thinking maybe I'll just leave the antenna wire unplugged and try to connect only the ground wire. Same noise. I tried wrapping a wire around one of the RCA jackets and touching it to the new ground wire I ran earlier. Noise got worse. I checked the resistance of the amp ground again and it actually read -0.09. is negative resistance unusual? I will try checking the voltage difference next. Again sorry if any of this sounds dumb, total newbie. Oh and the car is a 2002 grand marquis btw. EDIT: Voltage between amp power and ground: 13.5 Voltage between batt pos and neg: 13.59 [/QUOTE]
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Help with grounding head unit.
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