Re: 1987 single headlight to 1991 suburban 4 headlight wiring
Besides not having to buy another harness, another benefit of relaying the whole deal is you'll be able to run all 4 lights at once when switched to high beam.
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1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
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