What type of spark plug wires should I use? Matt May 23, 2018 16:03 Follow The Dyna 3000 Series ignitions require a good quality suppression core/resistor wire for optimum performance. Use a copper core wire may result in poor erratic performance, unless used with the stock resistor plug caps. Related articles What spark plugs gap should I use? What type of spark plug wires should I use? What coils should I use? Which advance curve group do I use? What is the best method of activating the retard mode on my Honda Valkyrie with the D3K1-1 ignition and a supercharger? Comments 0 comments Please sign in to leave a comment.