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post #4 of (permalink) Old 02-28-2019, 04:37 AM
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Step 1 is to put a test light or meter on the battery. If the test lamp glows brightly, it's a fair chance that the battery isn't the problem. (A meter showing over 12V is also an indication, but the battery could have an internal fault that might still allow a 12V reading without being able to provide enough current to run the car.)

Test light is better. Ground one end of it, and probe the positive post, then over any fusible link, then over to the fuse panel, etc.
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