crowd pleaser
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- Mar 18, 2011
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XML said:Please explain what earth points are.
My car is new, with about 1,300 miles on it. Is this something I have to worry about?
No, the body if the car acts as the negative cable to the battery and referred to as 'ground'. to power something like a radio all that is needed is one side if the device to be 'grounded' and supplied with a fused positive from the battery.
Certain devices like spot lamps pull heavy current, with introduction of plastics in place id steel, cars have various ground points for good negative connection to the chassis and body.
These ground points can corrode or become or left loose, and cause high resistance, and in turn may cause issues with RFI screening and result in you hearing the whine from the alternator, fuel pump motor, wind screen wipers or the spark plugs over the audio, but i think that us enough info for now - NOW WAKE UP AT THE BACK!!! .