27
Do not use on electronic control units!
Testing trailer lights and connections
• Use the negative clamp for setting up a ground connection.
• Connect the proof tip to the different trailer elements and lamps. Check the connection of the
plugs to the lamps and detect their classification.
• If the circuit breaker has been released, there is a ground connection.
• If the circuit breaker has been released, reset by using the reset button.
3
Design and Function
12 V