OBD2 Jumper Cable ECU Full Protocol Data Reading and Modification Accurate Data Transfer ECU Chip Tunning Tool Item Type: ECU Programming CableMaterial: ABS Product Features: 1. Support DC power supply 2. Support security protection head super programming special connection port power supply. 3. Independent GND4 and GND5 (meet special ECU programming needs) 4. With boot GND4 clip, compatible with burning equipment 5. With GND4 GND5 short circuit switch (some ECUs need to switch to short circuit mode when programming) Note: The switch of GND4-5 is always pressed to light up. When some ECUs need to connect GND4 and GND5 independently, release the switch 6. With ignition analog switch (with 1 large and 2 small special ignition wires) 7. Support standard obd2 full protocol connection (double K line, double CAN line), 3 large and 2 small power plugs, 4 large GND, 4 small GND 8. Equipped with CAN protocol communication resistors What is an analog ignition switch? After the ING ignition switch is pressed, the line marked ING12V will have 12v, which is the analog ignition switch. Because when some devices read some ECUs, the device will prompt to turn on or off the ignition switch.