GM-50334-13 Splitter cable enables technicians to test for faults in the rear seat splitter between the media disc player and the video screen in Next Generation Rear Seat Entertainment applications. GM-50334-13 is used in conjunction with GM-50334-12 and GM-50334-14. The 4 pins with data are now split into two cables. Both screens receive data on pins 2 and 3. So the splitter must take its input pins of 1 and 2 moving them to pins 2 and 3 for the output to screen A and it must also take the input pins of 4 and 5 moving them to pins 2 and 3 for the output to screen B.