Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
LUCAS "Opus" Electronic Ignition: Description
Lucas Oscillating Pick-Up System (OPUS) electronic ignition includes an amplifier unit that is mounted separately or on distributor. See Figs. Fig 1and Figure.
A ballast resistor unit is used on all Jaguar models, while a ballast resistor wire is used on other models. Other components include an ignition coil, a drive resistor (if used), and the breakerless distributor.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.