The red one is to get sure cable with dc ability of 5 volts. Toyotalexus obd ii diagnostic interface connector pinout diagram data link connector wiring diagram wiring usb type c wiring diagram september 6 2018 april 12 2020 wiring diagram by anna r.

Ziqiao Elm327 Usb V1 5 Obd2 Car Diagnostic Interface Scanner
Obd2 to usb wiring diagram. Black wire serves as ground exactly like in any other apparatus. In accordance with wiring diagram for obd2 port to usb you will find only four wires used in the cable. In accordance with usb to obd2 cable wiring diagram there are only four wires used inside the cable. Typically it uses black green white and red wire colours. Odb2 to usb interface cable truck repair engine repair car engine car ecu electronics basics electronic schematics electrical wiring diagram car audio systems car mods. Black cable serves as floor just like in every other device.
The red one is to get sure wire with dc power of 5 liter. 16 pin j1962 obd 2 car diagnostic connector at the car. In accordance with wiring diagram of obd2 data cable to usb for pc there are only four wires used inside the cable. Obd2 to usb interface cable scheme and plate pinout. The red one is for sure wire with dc power of 5 liter. Pinout of obd ii to usb cablej1850 interface supported.
Typically it uses black black red and white cable colors. Typically it uses black green white and red cable colors. Black cable serves as ground just like in any other device.