1. The main function of OBD adapter is communication between your car and diagnostic scanner (with 16pin male connector). So if you find the communication problems, please don't leave negative feedback to us, please make sure the scanner is compatible with your scanner, because many scanners are not supported with OBD vehicles. 2. The inner coil of cables is not fully as the pin shows, because the main function for the cable is to transmit data through some pins, it only acts the role of communication, work well with code reader , also for launch / altar diagnostic tools and so on. Object characteristics: This is 12 Pin to OBD2 Female 16Pin Adapter Cable for . Used to convert for 12 pin to OBD OBD2 16 pin interface Used to connect OBD interface diagnostic tools For Colour: black Material: plastic Package Contents: 1 x OBD Diagnostic Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.