Wiring Diagram For Lucas Ignition Switch

By | August 17, 2022

A Lucas ignition switch is a type of electrical switch that is used to control the ignition of an engine. It is typically located on the dashboard of a vehicle and is used to turn the engine on and off. The switch is typically a rotary switch that has three positions: off, run, and start. When the switch is in the off position, the engine is not running. When the switch is in the run position, the engine is running but not starting. When the switch is in the start position, the engine is started.

The Lucas ignition switch is typically wired to the following components:

  • Battery
  • Starter solenoid
  • Ignition coil
  • Engine control unit (ECU)

The battery provides power to the ignition switch. The starter solenoid is a relay that is used to connect the battery to the starter motor. The ignition coil generates the high voltage that is used to spark the spark plugs. The ECU is the computer that controls the engine.

The wiring diagram for a Lucas ignition switch is shown below.

Lucas ignition switch wiring diagram

The following is a description of the wiring diagram:

  • The red wire from the battery connects to the terminal labeled "B" on the ignition switch.
  • The black wire from the battery connects to the terminal labeled "E" on the ignition switch.
  • The yellow wire from the starter solenoid connects to the terminal labeled "S" on the ignition switch.
  • The green wire from the ignition coil connects to the terminal labeled "I" on the ignition switch.
  • The blue wire from the ECU connects to the terminal labeled "C" on the ignition switch.

By following this wiring diagram, you can install a Lucas ignition switch in your vehicle.

Here are some tips for installing a Lucas ignition switch:

  • Make sure that the ignition switch is compatible with your vehicle.
  • Disconnect the battery before you start working.
  • Follow the wiring diagram carefully.
  • Test the ignition switch after you have installed it.

By following these tips, you can install a Lucas ignition switch in your vehicle safely and correctly.


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