Constant power
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Junior Member
Joined: Oct 2008
Posts: 3
Constant power
Can anyone help on my installation problem? I installed a RNS-E unit in my early 2005 A4 Avant. Everything seems to work fine except something is always draining power. I can here a constant low hum when the car is shut off. Of course it drains the battery.
Joe.
Joe.
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