Battery Light Flashing? Decipher Electrical System Enigmas

You will find a bad alternator, most likely. Or take a volt meter and test voltage at the battery. Should be about 12 volts, engine off, and ... A defective battery, a defective alternator, defective wiring, something loose (like a nut holding a couple of wires to a terminal), etc. The car battery light might come on for many reasons, but generally, the reasons are: ... Your car does its best with a charged car battery. Any 1 of the problems ... But having the voltage gauge installed really is key to being able to drive in a car like this without worrying each time it comes on. Usually, ... the car runs fine but the light stays on please help? ... mine does the same thing... along with the oil light.. ... check the battery voltage with ... Your car battery or charging light on the dashboard of your car indicates a malfunction in the battery circuits or bad charging of the car ... edit: and a battery doesn't "charge straight up" when the car starts, the alt just starts supplying the 14.4 volts a car runs on and the battery ... If it stays on or comes on while driving, it indicates that the charging system is not functioning properly and the battery is not receiving a charge. Since the battery isn't discharging while the truck is sitting probably the diodes are fine. Voltage regulator should not be very expencive, so ... The battery is discharged or weak. · The battery cables are loose. · There's too much acid corrosion on the battery terminals. · The alternator is ...