Black wires with yellow print. With black plug boots and coil boots. Ready to install. Low resistance 500 Ohm/ft. Ferro Spiral core for maximum energy delivery with a 8mm thick silicone jacket. The silicone insulation effectively eliminates RFI and EMI interference for a interrupt-free functioning of all on-board electronics. Fully compatible with both carburetor as the Delphi fuel injection systems. High temperature boots withstands over 500. Note: Compatible with all H-D ignition systems. If you have an aftermarket ignition please check with manufacturer ohm requirements. 00-17 Softail (excl. 08-11 FXCW/C 11-13 FXS Blackline 13-16 FXSB Breakout) (NU)