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Recreational Mechanic
Join Date: Sep 2000
Location: Northern Colorado, USA
Posts: 3,326
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Alternator noise - 12v or ground?
Long story short I put a Bluetooth audio unit in my 996 and I get some electrical alternator noise at all but idle. I wired the unit to the unused factory phone harness. Does this kind of noise usually come from the 12 volt side or the ground? My thought is I need to change one of them or both to try and get rid of the noise. This is more of a general wiring question than a Porsche specific one, it just happens to be on a Porsche so I figured I'd post it here to see what the Brain Trust has to say . Thanks in advance!
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P Cars: 2022 Macan GTS / One empty garage space ---- Other cars: 2019 Golf R 6MT / 2021 F-250 Diesel / 2024 Toyota GR86 6MT ---- Gone: 1997 Spec Boxster Race Car, 2020 GT4, 2004 GT3, 2003 Carrera, 1982 911SC, 2005 Lotus Elise and lots of other non-Porsches
PCA National DE Instructor #202106053 / PCA Club Racing / WRL Endurance Racing
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