Vehicle Battery & Alternator Diagnostics

When testing a modern vehicle for a parasitic battery drain, how should your digital multimeter be wired into the circuit?

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 Correct IncorrectTo measure current (amperes), the multimeter must be wired in series between the disconnected negative battery cable and the negative battery post.

When testing a modern vehicle for a parasitic battery drain, how should your digital multimeter be wired into the circuit?

• Clamped onto the rubber windshield wiper arm
• In parallel across the positive and negative terminals directly
• In series between the disconnected negative battery cable and the battery post
• Plugged into the cigarette lighter socket only