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How-to » Engine » Starting, Charging & Electrical » How to Replace Battery Cables
 Note: This is a general guide for all vehicles.

How to Replace Battery Cables

PARTS
  • Battery Cable
TOOLS
  • Battery Brush
STEPS
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Moderate
Safety Tip:
Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes.

1
Safety Tip: Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes.
2
Open the hood, the trunk, or lift the back seat to locate the battery. Most batteries are located in the engine compartment. Before working under the hood, make sure the hood struts are strong enough to support the weight. If the struts are weak, use a prop to keep the hood from falling.
3
If necessary, write down the audio system antitheft code or turn off the lockout feature. Refer to your vehicle owner's manual for specific instructions. Loosen the nut and remove the negative (Ground) cable from the battery.
7030
4
Loosen the nut and remove the positive cable from the battery.
6788
5
Note the routing of each cable. Disconnect the negative cable from the engine block or other ground location. Disconnect the positive cable from the starter solenoid.
6
Verify that the new cables are the correct length. Install the original positive cable covers on the new cable if necessary. Attach the positive cable to the starter solenoid. Clean the ground point first where the cable makes contact to insure solid connection; no paint, dirt or corrosion. Attach the negative cable to the engine block or other grounding point.
7
Clean the positive and negative battery posts with a wire brush.
8
Attach the positive cable to the positive post on the battery and tighten the nut. Coat the cable end with a corrosion inhibitor and install the protective cover.
9
Attach the negative cable to the negative post on the battery and tighten the nut. Coat the cable end with a corrosion inhibitor.
10
Start the vehicle to verify the repair.
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