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automotive accessories - COP and Signal Probe

The Coil-on-plug (COP) and signal probe from Pico Technology is the fastest way you can check coil–on–plug ignition coils and spark plugs.

  • Find misfires fast
  • Displays scope patterns of the secondary, faster than scoping the primary
  • Works on all automotive scopes capable of displaying ignition patterns
  • Can also be used to investigate injectors and other inductive actuators
  • Flexible design allows for easier access to hard-to-reach components
  • No batteries required


Like distributors, spark plug wires are starting to disappear from cars. With the new COP ignition systems the ignition coils are connected directly to the spark plugs — eliminating the need for the spark plug wires. With no high–voltage spark wires, a COP probe is required to be able to pick up the secondary ignition waveform.


Coil-on-plug and signal probe
TA204 - In stock
£95·00 US$156·75 €114,95

Save money!

Purchase a Coil–on–plug and signal probe together with a TA033 BNC cable and save money.

Coil-on-plug and signal probe
TA204 - In stock
BNC to BNC cable with earth clamp
TA033 - In stock
£105·00 US$173·25 €127,05

How does it work?

The Coil–on–plug and signal probe works with most COP systems; it requires no special adaptors, no foil strips, and no batteries. The Pico Coil-on-plug and signal probe eliminates the need for back–probing: to use the probe simply press the probe against the coil.

COP waveform

Secondary ignition waveform captured using the Coil–on–plug probe.

A TA033 BNC to BNC cable is required in order to connect the COP probe to your automotive scope.

Along with testing COP systems, the Coil-on-plug and signal probe can also be used to obtain many other signals, including a secondary ignition waveform on conventional ignition systems.

Designed to save you time, effort and money, the Coil-on-plug and signal probe is the fastest way to test both conventional coil–on–plug secondary ignition systems.

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