Auxiliary Battery Wiring Diagram
1. Connect one end of the jumper wire to the positive terminal of the auxiliary battery (has a sign "+" on the battery case or on the terminal itself).
2. Attach the other end of this wire to the positive terminal of the dead battery.
3. Connect one end of the other jumper wire to the negative terminal of the auxiliary battery (has a sign "-").
4. Attach the other end of this wire to a ground on another vehicle, such as an engine block or some threaded connection in an engine mount.
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