voltage meter install

[SMS 10+ year member]

ill be installing a stinger voltage meter shortly and was wondering if i should splice all 3 wires to the head unit or just do ground and remote to the h/u and bring the power to the amp or at least the d-block?

so what u think?

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[NASTY08IMPALA 5,000+ posts]

U want to run power n ground all the way back to amp and tap into remote sonewhere...ou want to know what the voltage is at ur amp not the hu