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Q: I touched the positive and negative battery terminals together, now the car has no power at all

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Accidentally hit the positive and negative together had a little spark. Now no power. Changed out the starter relay and had the 140A battery fuse checked still no power. Checked the battery as well it was good. Could I have shorted out the positive battery cable

My car has 250000 miles.
My car has an automatic transmission.

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