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I have a JVC XG700 double din music system fitten in my Chevrolet U-VA Car. The system is good but i am facing a real problem from day one.

the setting of the music system did not saved, like when i set the clock, screen display, brass, trebble like sound effect it is not saved and when i take off the car key all setting got vanished. Any one can help me out.

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It is not wired correctly - All HU's have one wire that needs to draw power even when the ignition key is switched off. The HU draws power thru this to retain the settings in memory. Go back to your installer and ask him to correct it.

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