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Battery light on, voltage spiking

Battery light on voltage spiking

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One of two things is happening, first if you have added an aftermarket stereo or cd/dvd player ,It may not be grounded correctly .
Over time after this install what is known as a high yield hydrostatic charge is discharged throughout the vehicle. Causing a high amount of corrosion on the battery terminals.----and a high amount of static though the cab of the truck as well.. In turn it also creates a fair amount of high charge/discharge in the alternator. As a car is truly a self contained battery charging station.
My solution was first to rewire the ground of the cd/dvd player unit then from there I replaced the factory ground wire with a three lead wire assembly to create a second secondary ground strap attached to the body of the truck using a body bolt on the inside of the hood.
The only other thing that can happen is either the battery or the alternator is going out or a bad connection in that event refer to the service manual as to replace said units
Certified M.A.T, ASE
Mike Williams

Posted on Feb 08, 2011

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