The multipurpose test lead is an integral part of an automotive oscilloscope. It allows you to evaluate output voltage and catch waveforms in car connectors, terminals and other circuits.

Key Features


ROTKEE (Ukraine)

Operating voltage

no more than 60 V

Removable lead connector

4 mm “banana”

Output connector


Total length

2.5 m

Operating temperature range

-20 to 80℃


150 g


Video Lessons

Test leads review and alternator diagnosing on Ford Focus 2 (watch from 4:28)

Showing how to perform the CSS script by Andrey Shulgin or Cylinders efficiency using MT Pro automotive oscilloscope (watch from 13:49)

Diagnosing a starting and charging system with an example of Subaru Imreza. Connection the TL-mlp test lead to the battery being tested (watch from 8:00)



Contents of delivery

  • A multipurpose test lead - 1 pc
  • A flexible pin lead probe - 1 pc
  • A red alligator clip lead probe – 1pc
  • A black alligator clip lead probe – 1pc

The Test Lead Design

TL-mlp Multipurpose Automotive Oscilloscope Test Lead drawing

The test lead is specially designed for making measurements in internal combustion engines. A soft microphone cable with a dense braided shield is used as a cord. 4 mm "Banana" plugs are used as test probe connectors; BNC is a sensor - oscillograph connector.

With the help of a standard 4 mm Banana plug you can easily connect/disconnect/change test probes. This plug is compatible with test probes from other manufacturers as well as multimeters. Socket function is marked on the housing end.

A multipurpose test lead is completed with alligator clips and a flexible test pin. If necessary the set can be extended with plunger hooks.

The removable leads are made of a flexible PVC cable. A flexible lead pin is ideal for connecting an oscillograph to automotive connectors as well as other recessed areas. A thin pin and a handy holder allow connecting to virtually any connector without damaging the circuit and wiring insulation, which enables to reduce the circuit rust. The spring prevents the pin from accidental breakage.

When designing the test lead, high emphasis has been placed on a signal cables joint as this junction is damage-prone. Each of these joints includes a circuit board with the test lead’s electronic components. The board not only supports the loads, but also fixes the cable. Such solid joints prevent cable breakdown and increase its durability.

The test lead is compatible with the MT Pro motor tester as well as any other oscillograph. It can be connected to any analog channel.