Features The secondary ignition probe allows the oscilloscope function to measure kilovolts with Dispenserless Systems (DIS) or conventional ignition systems. It comes with a shielded 2.5m lead. This is a condenser pickup simply attached around the insulation of ignition circuit components such as plug wires. The secondary ignition probe uses a capacitor clip and conditioning circuit to acquire the signal to provide a readable waveform to the oscilloscope. Compatible with conventional ignition systems and most HEI and DIS systems. Features: -The secondary ignition probe allows the oscilloscope function to measure kilovolts with Dispenserless Systems (DIS) or conventional ignition systems. -It comes with a shielded 2.5m lead. -This is a condenser pickup simply attached around the insulation of ignition circuit components such as plug wires. -The secondary ignition probe uses a capacitor clip and conditioning circuit to acquire the signal to provide a readable waveform to the oscilloscope. -Compatible with conventional ignition systems and most HEI and DIS systems.   Specification: Condition: 100% Brand New Model: X10000 Weight: Approx. 166g / 5.9oz Length: Approx. 256cm / 100.8in 1 * Secondary Ignition Pickup Probe    Note: 1. The test-clip should be connected to the isolative wire of ignition plug instead of ignition plug itself to prevent the fire of electrical shock. 2. At least 2inchs away from other high-voltage wires to avoid the interference. Package List