Ignition System - LUCAS Electronic: Description
The ignition system includes a breakerless distributor, amplifier module, an ignition coil, ignition switch, and battery. See Fig 1. No ballast resistor is required.
The distributor has conventional centrifugal and vacuum advance systems, an anti-flash shield, rotor, reluctor, and pick-up coil. See Figure. The reluctor is a gear-shaped component with 12 teeth, one for each cylinder.
The pick-up coil includes a winding, pole piece and a permanent magnet. A 2-wire shielded harness connects it directly to the amplifier module. The amplifier module, housed in an aluminum case, is located near the distributor.
On XJS models, 2 ignition coils are used. See Fig 1. Main coil is connected in parallel with primary windings of auxiliary coil. The secondary circuit of auxiliary coil is not used and coil tower is sealed. Amplifier modules are not interchangeable between models.