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Message: <blockquote data-quote="keep_hope_alive" data-source="post: 6874795" data-attributes="member: 576029">try bypassing the ignition wiring in the car.  install a relay on the car's ignition wire and power the head unit (constant and ignition) from the battery.  maybe the battery can filter out that noise.i can give you a wiring diagram later tonight if you're interested.that's how i have my HU wired - the only vehicle wire i use is the radio ignition and it just powers a relay coil.  my entire system is electrically independent of the vehicle wiring.</blockquote>

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