“So I got this unit installed by the BestBuy in Irvine a few months ago. Recently, however, when I turn on my car, I have a 2015 Nissan Sentra SV, the Sony unit takes a few minutes to turn on or doesn't turn on at all until I restart my car. Any ideas?”
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The wiring for individual cars can be challenging! There are three important wires for powering this unit. BAT Yellow ACC Red GND Black The Red wire is what turns on and off the unit. The Yellow wire keeps the functions such as station assignment in memory. Finding the right wires is always challenging. Either your red wire was connected a +12Vdc source that does not turn on immediately, or the ground is wired to a circuit that doesn't get connected until after a delay. I have found that wiring the RED and Black wires directly to the cigarette lighter/Power Outlet that is only powered when the car is on usually solves the problem. Using the existing car stereo wiring adapter sometimes gives unpredictable results.
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