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Old 01-30-2023, 02:21 PM   #9
mrein3
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Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
Re: Headlight Harness Install

I rolled my own "harness" and will never go back.

And yes it will work for a GMC with 4 headlights. The only difference is the "high" relay goes to one set of lights, the "low" relay to the other.
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'70 cab, '71 chassis, 383, TH350, NP205.
'71 Malibu convertible
'72 Malibu hard top
Center City, MN
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