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I have installed a new Kenwood stereo in my '97 D1 4.0 V8. I bought a Metra adaptor kit (#70-9400) and it seems to have worked. Sort of. All speakers are working including subs in the rear but with the ignition on there is a loud ground hum. It also seems to be picking up the interference from the bluetooth. Has anyone else had a solution for this particular problem with aftermarket stereo replacements?

If I need to run a new ground wire where should it run to and from?

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If your car is fitted with an amplifier, I think if you have a woofer in the back door it's a cert, then the input is probably wanting line level feeds and the interference isn't a ground issue.

Google line level converter to find one.

My last 97 D1 had this.

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