In a V6 Commodore VT, the spark plug leads connect to the ignition coils, which are located on top of the engine. Each lead corresponds to a specific cylinder, with the firing order typically being 1-6-5-4-3-2. The leads run from the ignition coils to each spark plug, ensuring proper ignition of the air-fuel mixture in the cylinders. It's important to connect the leads correctly to maintain engine performance.
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