7 pin trailer plug wiring

[Stoney]

Hey guys i have been looking all over the forum trying to find a wiring diagram to wire in a 7 pin trailer plug.
I looked at the wiring loom running to the break and indicator lights but the wire colours dont make much sense.
any suggestions would be great.
Cheers

 

[KraftyPg]

Are you trying to find the wires from the loom to the socket?Tried wiki?

Edit: Google images is just as helpful,

 

[scooba_285]

test light or multimeter?

 

[Stoney]

Yeah my first idea was a multimeter the problem is that the loom plug if fused shut, the only other thing i could think of is slice into the wires and test it that way. its just a bit more of a mission :/

 

[terryc]

Is this any help?
http://www.campertrailers.org/trailer_wiring_diagram.htm

That is assuming they have used the "standard" 7 wire cable and followed the wiring code, says someone who is planning to replace the dodgy wiring in his with 7 wire all white mains controlled cable that only has numbers every metre.

It is a frigging major PITA suddenly finding faulty wiring somewhere to/n the trailers, so one one of my first projects after getting a trailer was to build a car trailer socket light tester on a long cable so I could sit in the driver seat and test all the wires/pins in the car socket were working. That was after blowing up two indicator control boxes in the van as they could not stand the current and building my self a relay box inside the back mudguard to actually run the trailer lights.

The second was a long extension cord and a socket with tails so I could touch the ground wire and each of the others to battery terminals to test that the lights on the trailer were working.

So long as I put them back where they belong, they are quick and easy to find.

 

[Krankin]

and on the seventh day......

http://www.narva.com.au/products/browse/wiring-diagrams

 

[Stoney]

I ended up pulling the rear lights apart and follow the wires. The wire color changes 2 times as it goes through different loom plugs,
But it ended up being as follows:
Breaks- Dark Pink
Reverse- Light Pink
Left Indicator- Purple
Right Indicator- Orange
Rear lights- Grey
trailer Break assist- Brown
Neutral/ Earth return- Black
.. Thanks for your help