Twin Tec Model 1005 Internal IgnitionTwinTec 1005 ignition BT70 99 XL71 97 Daytona's Twin Tec model 1005 Internal Ignition unit is intended for those who want a flush mount ignition system. For this cleaner look, the model 1005 ignition replaces all the Harley Davidson OEM ignition components, including the bulky wiring harness and external module. This ignition unit is triggered from the stock timing rotor at the end of the camshaft and mounts inside the engine nose cone. It is intended