For the third time, there was no wire ring on the bottom of the plug cap to hold it tight to the plug. The guy took the ring off and flung it. Its purpose is to get a good ground. Motors like the Quadras use a carbon plug wire and a resistor plug to stop interference but you"ll notice they have to have a wire to ground the ign. module to the motor. The braided wire and metal plug cap serve as ground for the module, as long as the cap is on tight and has the ring to secure it to the plug base.