Vehicle OBDII Interface Monitor Diagnostic Protocol Auto Car Diagnostic Connector with LED Light for Multimeter Or Oscilloscope Test Feature: 1. Led Indication: You can quickly indicate power or ground problems with the OBDII connector by the colour of the LEDs.A yellow LED on indicates that the OBD2 scanner is communicating with the vehicle and that there is a signal waveform on the corresponding pins 2/6/7/10/14/15. The green LED on pins 4 and 5 is on when the vehicle is properly grounded. The red LED on pin 16 is on when power is normal. 2. Quick Acce: The automotive protocol detector is an automotive tool for the OBDII diagnostic link connector, providing easy acce to the OBDII connector for easy and secure monitoring of protocol, power and ground signals. Once an unconfirmed signal is detected, it can also be connected to a multimeter or oscilloscope for further testing. 3. Unique Design: The input jack layout of the obd2 breakout box exactly mimics the 16-pin layout of the OBDII interface, allowing for quick and intuitive additional testing. All 16 pins of the OBDII breakout box can be easily connected when the OBD2 scanner is communicating with the vehicle. 4. Diagnose and Modify Your Car: The OBDII breakout box is perfect for diagnosing and modifying your car or truck, so you can detect faulty problems in your car yourself. 5. Warm Tips: Do not connect pin jumpers without knowing the circuit. Do not use the tool to power equipment with loads over 1 amp. Do not place jumpers between power pin 16 and ground pins 4 and 5. When the car in the breakout box is started, the yellow LED will flash when a change is made on the corresponding data line. The flashing LED will allow you to determine the activity on that line. The green and red LEDs corresponding to pins 4, 5 and 16 of the OBDII connector are always active. Specification: Certification: NONE Origin: Mainland China Model Number: Automotive Protocol Detector Material: ABS LED indication: Yellow LED (pins 2/6/7/10/14/15) illuminates to indicate communication identification with the scan tool and protocol. Green LED (Pin 4/5 lit to indicate good ground) Red LED (Pin 16) lit to indicate power) Dimensions. Machine size: 180x80x35mm/7.08x3.14x1.37icnh Wire length 90cm/35.43inch Attention: This tool is intended for use by automotive profeionals. This tool allows easy acce to the vehicle data bus. Improper use of this tool may damage the vehicle data communication system and aociated circuits and systems. Do not cro connect pins together without understanding the circuitry. Do not use the tool to power load devices exceeding 1 amp. Do not place jumpers between power pin 16 and ground pins 4 and 5. When this display is enabled, the yellow LED will flash when a change occurs on the corresponding data line. The flashing L ED will allow you to determine the activity on that line. The green and red LEDs corresponding to OBDII connector pins 4, 5 and 16 are always active. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1X OBD2 Protocol Scanner 1 X Instruction Booklet