Very common problem is the generator. It is supposed to keep the battery charged. Measure the battery voltage with the engine running. It must be between 13.75 and 14.75 volts. If it is low, the generator is not working or there's a blown fuse for its output circuit. That will be a large bolted-in fuse in the under-hood fuse box.
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Sunday, November 11th, 2012 AT 8:16 PM