1. SEE THE PIN NO. 1/2/3……8/9 on the cable
2. USE THE multimeter FIND THE PIN 3 & PIN 5 ;
Put the probe of multimeter into pin3, another probe will be put on the cable, try every wire and find the wire which the multimeter pointer will move
3. Use the same way to find the wire5 which will make the multimeter pointer move when probe put into pin 5
4. Mark wire 3 and wire 5 and connect the 2 wires with LED indicator.