How to wire a 13 Pin Trailer Plug | 13 pin caravan plug

How to connect a trailer plug if you don't know the wire colors
Product purchase link : s.click.aliexpress.com/e/_Dmx...
#diagram_electrical
SRA Electrical
Keywords :
13 way trailer plug
13 pin trailer wiring
13 pin trailer plug wiring
13 way trailer connector
trailer harness wiring
wiring for trailer lights
trailer connector wiring
seven pin trailer plug
seven way trailer plug
wiring a trailer plug
seven pin trailer connector
plug for trailer
13 pin trailer connections
13 pin trailer plug connection
13 pin trailer plug and wire
13 pin trailer socket wiring
13 point trailer plug wiring
13 way trailer plug connector
plug trailer 13 pin
seven pin trailer socket
seven way trailer connector
trailer connector wiring 13 pin
trailer electrical connector 13 pin
trailer wiring 13 pin connector
13 pin trailer plug
12 pin trailer plug
diagram electrical
wiring diagram
electric circuit diagram
electrical wiring diagram
electrical circuit diagram
electrical schematic
wiring schematic
electrical schematic diagram

[@codprawn]

Showing how to open it would be nice!