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International Automotive Technicians Network
Re: Using a test light for parasitic draw?
Posted to Technical Discussion Forum on 4/2/2007

Hi Don,

You are dead on target. When checking for parasitic drain I always test amps/miliamps. I prefer intrusive... its an 'old school' kinda thing.

Curious, Do the youngsters also test the alternator output by pulling the battery cable with the engine ru... Login to read more.