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My ford focus the lights get dim to bright. i have changed 3 alternaters

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Still may be voltage regulator.
may be ground wires coming for battery to car body.even the smaller grounding wires.
check for corrosion on battery terminals and wire connections.

Posted on Mar 25, 2011


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Battery light

try scanning your vehicle and see what does it tell you...if no code is retrieved try checking for open circuits. you can do all this with a snap on or mac scanner.
if yoiu get any code either you can do some research or post it here so i can look it up.

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