These are the large style used as standard in Victoria.
Queensland uses a smaller socket.
We find the plastic sockets sometimes are more durable than the alloy ones after they have been accidentally dragged down the road.
Comes with a handle to help secure the trailer cable.
There are 2 wiring diagrams in use:
1 left hand turn - yellow
2 reverse - black
3 earth - white
4 right hand turn - green
5 electric brakes - blue
6 stop - red
7 tail, clearance, side markers - brown
1 earth - white
2 left hand rear , clearance and marker - black
3 left hand turn - yellow
4 stop - red
5 right hand turn - green
6 right hand rear , clearance and marker - brown
7 reverse/auxilary - blue 12 Volt, 12v Plugs and Sockets, Australian RV, Brake Systems