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Hawkesbury River NSW

Technical Tips & Details

Last Modified:
11 Nov 2013

Wiring of Trailer and Caravan Plugs - How To

Caravan/Trailer Wiring 

The following is the Standard for wiring for trailer and caravans.   Some older plugs are still around and don't always comply with this standard, Important to check that the Car and Carava/Trailers are wired Correctly.

Correct wiring is not only for comatability of other vehicles towing but also as a safety measure.

One very important fact to remember is that it is the WHITE wire is "ALWAYS" the earth in trailer wiring not the green or black wires.

 

12 Pin Flat Plug Socket



Flat 12 Pin Trailer Plug
Flat 12 Pin Trailer Plug

Flat 12 Pin Trailer Socket
Flat 12 Pin Trailer Socket
Pin Connection Colour
1

 Left indicator
Yellow
2  Auxiliary or reversing light

Black
3  Earth

White
4  Right indicator

Green
5  Electric brakes

Blue
6  Stop light

Red
7  Tail and registration plate

Brown

Extra Heavy Duty Row for Flat 12 Pin Plug



8


Battery Charger/Electric Winch

Orange



9


Auxiliaries, etc / battery feed / fridge

Pink



10


Earth Return

White



11
Rear Fog Lamps

Grey



12


Spare

Violet

Flat 7 Pin Plug

Flat 7 Pin Socket




 

7 Pin Flat Plug Socket
(Note this plug is compatable with 12 pin Socket)



Flat 7 Pin Trailer Socket
Flat 7 Pin Trailer Plug

Flat 7 Pin Trailer Plug
Flat 7 Pin Trailer Socket
Pin Connection Colour
1

Left indicator
Yellow
2 Auxiliary or reversing light

Black
3 Earth

White
4 Right indicator

Green
5 Electric brakes

Blue
6 Stop light

Red
7 Tail and registration plate

Brown
Flat 7 Pin Plug

Flat 7 Pin Socket




 

7 Pin Round Small Plug Socket

Small Round 7 Pin Trailer Socket
Small Round 7 Pin Trailer Socket
Small Round 7 Pin Trailer Plug
Small Round 7 Pin Trailer Plug
Pin Connection Colour
1

 Left indicator
Yellow
2  Auxiliary or reversing light

Black
3  Earth

White
4  Right indicator

Green
5  Electric brakes

Blue
6  Stop light

Red
7  Tail and registration plate

Brown
Flat 7 Pin Plug

Flat 7 Pin Socket




 

Round 6 Pin Plug

Small Round 6 Pin Socket
Small Round 6 Pin Socket

Left is the Small round 6 pin plug which was popular in NSW.

Pin Connection Colour
1
Larger Pin
Tail and registration plate


Brown
2
 Left indicator
Yellow
3
Right indicator


Green
4
Stop light


Red
5
Electric brakes


Blue
6
Earth


White
Small 6 Pin Socket
Small Round 6 Pin Plug
Small Round 6 Pin Plug
Small 6 Pin Socket




 

Large 7 Pin Plug

Round Large 7 Pin Socket
Round Large 7 Pin Socket

Left is the large round plug which are popular in Vic.

Pin Connection

Colour

1  Left indicator Yellow
2  Auxiliary or reversing light Black
3  Earth White
4  Right indicator Green
5  Electric brakes Blue
6 Brake lights Red
7  Tail lights Brown
Large 7 Pin Socket
 
Round Large 7 Pin Plug
Round Large 7 Pin Plug

Large 7 Pin Plug




 

Large 5 Pin Plug

Round Large 5 Pin Socket
Round Large 5 Pin Socket

Left is the large round plug which are popular in Vic.

Pin

Connection

Colour
   

Blank
2  Left indicator

Yellow
3  Earth

White
   

Blank
5  Right indicator

Green
6 Brake lights

Red
7  Tail lights

Brown
Large 5 Pin Socket
Round Large 5 Pin Plug
Round Large 5 Pin Plug
 
Large 5 Pin Plug




 

Heavy Duty 7 Pin Round Plug

Heavy Duty 7 Pin Trailer Socket
Heavy Duty Round 7 Pin Trailer Socket
Heavy Duty Round 7 Pin Trailer Plug
Heavy Duty 7 Pin Trailer Plug
Pin Connection Colour
1

Earth return
White
2 Reverse lamp

Black
3 Left hand turn signal

Yellow
4 Stop lamps

Red
5 Right hand turn signal

Green
6 Rear, clearance and marker,side marker

Brown
7 Service Brakes

Blue
Heavy Duty 7 Pin Trailer Socket

Heavy Duty 7 Pin Trailer Plug





 


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