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Secondary ignition pickup (capacitive with BNC) MI074

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Secondary ignition pickup (capacitive with BNC)

MI074 Secondary ignition pickup (capacitive with BNC)

Due to the high voltages involved in secondary ignition systems, it is not possible to make measurements by direct connection. Attempting to make a direct connection will almost certainly damage the measuring instrument.

The MI074 is a capacitive pickup that simply connects around the insulation of an ignition circuit component such as a plug wire. This avoids the need for direct connection.

The MI074 comes with a shielded 1.8 m (6 foot) lead. It is suitable for use with conventional ignition systems and most HEI and DIS systems. Our library of Automotive Waveforms contains example waveforms captured using a PicoScope automotive oscilloscope and the MI074.

Although ideal for use with a PicoScope automotive oscilloscope, the MI074 pickup can also be used with most other makes of oscilloscope provided they have a waveform invert option.

MI074 Secondary ignition pickup (capacitive with BNC)

How to use the MI074 Secondary Ignition Pickup

Safety precautions before use:

  • Keep the lead away from pulleys and other moving parts
  • Keep the lead away from heat
  • Never let the pickup come in direct connection with primary or secondary voltage (otherwise the PicoScope may be damaged)
  • Always use the ground clip
  • Do not let the metal portion of the pickup contact a ground

Connecting the MI074:

  • Connect the MI074 to the automotive oscilloscope before connecting to the vehicle
  • Connect the ground clip to a good ground on the vehicle
  • Connect to vehicle


  • Standard Ignition: clip the pickup around the coil wire (or one plug wire at a time)
  • Integrated coil: clip the pickup around the central location on the distributor cap
  • DIS: clip the pickup around one plug wire at a time
More Information
Manufacturer Pico Technology

Please Read the product attachement User Guide

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