What type of spark plug wire do I need? Matt May 23, 2018 15:43 Follow You need a good quality resistor/ suppression core wire. The stock Harley Twin Cam wires work well. Dynatek also carries quality wire kits. Dynatek does not recommend the use of Nology wires with our microprocessor controlled ignition systems. Related articles What is the difference between Single Fire and Dual Fire? What are the benefits? Why does Dynatek recommend 5 ohm coils for street use and 3 ohm coils for racing? How come my motor seems to be harder to start or sometimes kick back? Will the Dyna S work in my Evolution style case? What should I set my spark plug gaps to? Comments 0 comments Please sign in to leave a comment.