Step 3 of 6 · Battery & Terminal Service
Negative first
Negative first — step 3 of 6 in Battery & Terminal Service. Disconnect negative, then positive. Reverse when installing. That order reduces the chance a wrench from positive to the body sparks.

Free auto & mechanics tip: Negative first (step 3 of 6 from "Battery & Terminal Service").
Disconnect negative, then positive. Reverse when installing. That order reduces the chance a wrench from positive to the body sparks.
Baking soda paste + water, brush until shiny, dry. Grease on the post sides after the clamp is tight — not a thick layer that blocks metal-to-metal contact.
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