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Step by step replacement guide

Open your vehicles bonnet and safely secure it in the open position.

Ensure you follow all safety precautions when working on or under the vehicle. Make sure engine is totally cold and the vehicle is in gear/park, the handbrake is on, and the keys are out of the ignition. Refer to the manufacturer’s workshop manual if available.

Locate the spark plug leads; they are typically located near the valve covers on the top of the engine. On one end they will be attached to spark plugs inside the engine and to a distributor or ignition coil on the other.

 

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(Click to enlarge)

Make sure that all areas are clean, dry and free of oil and fuel.

Take note of the location of each ignition lead and mark each ignition wire so you know which way they go back.  Before you start we recommend using a digital camera to record how the existing leads attach to the ignition coil - distributor - coil pack, and the path they take to each plug. Take note of the route of each ignition lead and how they are arranged in the plastic retaining clips if fitted.

If the HT ignition leads are connected in the incorrect wrong order your engine will misfire.

 

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(Click to enlarge)

Remove leads carefully so you don’t damage or snap off any connectors or electrical terminals inside the ignition coil or spark plug tube, this will make the job unnecessarily more difficult. IgnitionLeads.com.au recommends the use of an Ignition Lead and Boot Pliers tool, and we supply one FREE with every set of Ignition leads purchased.

Compare new ignition lead set measurements to the new set to make sure they match, especially to ensure they are not too short. For this reason remove the original ignition leads carefully, as you may need to refit them if the new set are incompatible.

 

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Fit the new lgnition leads in the reverse order of that which you removed them, taking care that all electrical terminals have made good electrical contact. Ensure the ignition wires follow the original manufactures routing and how they are arranged in the plastic retaining clips if fitted.

 

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After all HT leads have been installed check your work to ensure no ignition leads are near moving or hot parts of the engine bay, and keep ignition leads away from all metal parts to reduce risk of electrical discharge.

You are ready to start your engine, if you have done your job correctly there should be nothing further to do but stand back and give yourself a pat on the back.

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