2.1 The system consists of an Ignition Module, a Display Module, wiring harnesses, (2) magnetic pickups and cables, a Hall-effect pickup and trigger magnet (4-cycle engines only), and an ignition coil for each spark plug; SEE FIGURE 4 for a complete system overview. 2.2 Use one of the following Altronic ignition coils: Unshielded coils 501061 ...