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J Knight · 08-20-2012, 10:39 PM

Use a test light to determine wich is hot for high then switch to low and test again, the third wire will be the ground.

08-20-2012, 10:39 PM	#4
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Wiring from 74 headlights to 82 headlights Use a test light to determine wich is hot for high then switch to low and test again, the third wire will be the ground. __________________ John 82 Chevy Silverado 350ci/TH350