Coil-on-Plug extension leads are the simple accessory that allow you to take accurate secondary ignition measurements on Coil-on-Plug ignition systems.

Coil-on-Plug extension leads are designed to aid diagnostics on secondary ignition circuits by allowing an HT measurement to be made when there are no, or limited access, to any spark plug leads. The leads are specifically designed for use with the PP178 Secondary Ignition Pickup.

COP extension leads are easy to use: simply fit them between the coil pack and the plugs, place a capacitive secondary ignition pickup on each lead, and your oscilloscope will show accurate ignition waveforms with correct kV measurements.

Coil-on-Plug extension leads are designed for use with PicoScope automotive oscilloscopes, but can also be used on all other lab scopes that are capable of displaying ignition patterns.