HT extension leads are the simple accessory that allow you to take accurate secondary ignition measurements on COP ignition systems.
HT extension leads are designed to aid diagnostics on secondary ignition circuits by allowing an HT measurement to be made when there is no, or limited, access to any spark plug leads. The leads are specifically designed for use with the MI074 Secondary Ignition Pickup.
HT 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 scope will show accurate ignition waveforms with correct kV measurements.
HT extension leads are designed for use with PicoScope automotive scopes, but can also be used on all other labscopes that are capable of displaying ignition patterns.