Pin | Signal | Description |
1,12 | GND | shorted |
10 | Vpp | |
6 | Tx | |
8 | Rx |
USB
Pin | Signal | color |
1,18 | GND | black |
15 | Data+ | Green |
17 | Data- | White |
14 | Vbus | Red |
For charging purpose pin 6 may be connected to +5V, pins 10,18 shorted.
Not sure about connector numbering. VCharge is for left-to-right numbering, don´t know about other signals.