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Moderator
Join Date: Feb 2004
Location: DFW (Hurst), Texas
Posts: 4,730
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Just turning the key to ON should not drop the voltage that much.
Do these numbers drop when the key is ON but engine is OFF?
Battery 12.42
Jump Box under Hood 12.42
Alternator red cable that bolts on 12.42
Do the readings at the alternator change when the cables are disconnected/connected to the alternator?
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