I just replaced a 10 year old set of these wires with the same ones as these are the only wires I have used that have lasted more than 2.5 years. The longest wire to the #2 spark plug has breaks. with OHM jumping from all directions when testing. The insulation and boots were in excellent condition. This may be due to a faulty cable as it had quite a long section that wasn't supported. I removed the covers from the old wires, cut them off and placed them on top of the new wires in places where they might touch or have some ground.
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