hooking up the radio neg wire and wire harness neg wire?

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santino1932

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ok lets try this again. all my wires are hooked up and ready to go but. first off the radio is a sony cdx gt520, the wire harness is the metra 70-2001,the car 1998 olds bravada suv 4.3 engine. now the problem is should i hook up the radios neg wire to the wire harness neg wire. or do i hook them up together, the radio direction says to ground to the frame but the wire harness doesn't say anything so. or do i hook both neg wires to the frame of the car. and do i hook them up to the frame together or seperately. need some fast help its getting cold in chicago. 10 points to the best answer thnx
 
hook the stereo ground to the wiring harness ground which should when hooked in to the factory harness already be grounded. If you run into any buzzing sounds or interference in the stereo later then run a separate ground to the frame.
 
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