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Wiring Trailer Plugs - STANDARD WIRING PRACTICE

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fool_injected

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Post Mon Nov 19, 2007 5:16 pm

Wiring Trailer Plugs - STANDARD WIRING PRACTICE

An often asked question is how to wire trailer plugs.

This info is from DOTAR and are the Australian Standard
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v6hilux

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Post Mon Nov 19, 2007 8:11 pm

What about "6 pin round". My uncle Arthur would be lost without one!
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macca81

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Post Mon Nov 19, 2007 9:12 pm

what about 5 pin?
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fool_injected

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Post Mon Nov 19, 2007 9:47 pm

There are some odd plugs around from pre-standard days

The four plugs above are what are sold in shops today which meet the standard
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macca81

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Post Mon Nov 19, 2007 9:49 pm

well nearly... i bought a 5 pin from supercheap about 2 months ago... tho its not being used for a trailer so we didnt need all the wires :D
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v6hilux

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Post Mon Nov 19, 2007 10:07 pm

What about the 3 pin trailer brake plug?
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fool_injected

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Post Tue Nov 20, 2007 4:41 am

I don't know, I just found the pics :D

I'd say (guess) the 12 pin plug would do the job
Using pins 5, 12 and probably 9 or 10
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me3@neuralfibre.com

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Post Tue Nov 20, 2007 7:18 am

How do we get this stickied?

Thanx
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rodrocket

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Post Tue Nov 20, 2007 7:56 pm

is there any 12 core flex availiable or does everybody just use 7 core & run H/Duty cable for the others

regards
rod
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fool_injected

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Post Mon Nov 26, 2007 10:24 pm

I think this mob sells 12 core http://www.biasboating.com.au/
Not a bad supplier for electrical stuff
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j-top paj

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Post Tue Nov 27, 2007 10:38 am

fool_injected wrote:Sign up for the free catalog

:armsup:
that catalog has heaps of good stuff in it
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zero

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Post Sat May 31, 2008 10:27 am

is it acceptable to wire in a trailer plug from the wires at the tail lights or are trailer plugs supposed to be on a septate circuit?
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v6hilux

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Post Sat May 31, 2008 12:54 pm

zero wrote:is it acceptable to wire in a trailer plug from the wires at the tail lights or are trailer plugs supposed to be on a septate circuit?


In most cases, you can do it from the wires nearest to one of the tail lights and run a single wire for the other blinker across to where you are accessing the loom if your car has looms back down each side. Leave some room for movement, don't splice-in too close to the globe fittings.

This will not apply to newer vehicles with the BUS system.
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zero

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Post Sun Jun 01, 2008 5:28 pm

thanks, shouldn't be too hard then
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seaeagle

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Post Sun Sep 21, 2008 5:49 pm

5 PIN

2 left turn yellow
3 Earth return white
5 right turn green
6 stops red
7 rear lamps, clearance and side markers brown

7 PIN

1 left turn yellow
2 reverse black
3 earth return white
4 right turn green
5 service brakes or aux if needed blue
6 stops red
7 rear lamps, clearance and side markers brown
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sudso

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Post Thu Oct 07, 2010 8:45 pm

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

If they really wanted to standardize it they'd make it so all wires in the 7 pin (except for the back up and service brake wires) are wired the same configuration in a 5 pin plug. No need for adaptor leads then and no stuffing about when borrowing or hiring trailers.
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Shadow

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Post Mon Oct 11, 2010 9:40 pm

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

sudso wrote:If they really wanted to standardize it they'd make it so all wires in the 7 pin (except for the back up and service brake wires) are wired the same configuration in a 5 pin plug. No need for adaptor leads then and no stuffing about when borrowing or hiring trailers.



They made 7pin the standard, and only tight arses kept using the 5 pin plugs.
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j-top paj

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Post Mon Oct 11, 2010 10:44 pm

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

got both on the GU :armsup: makes things easier when hiring trailers :D


it came with the 5pin round but i added the 7pin because all my trailers are 7pin.
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bru21

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Post Sun Mar 16, 2014 7:43 pm

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

;) Real trucks run 13 pin plugs
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burls

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Post Sun Mar 23, 2014 5:50 pm

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

Just wondering what others have done for the charge wire for the backup battery?
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GUtripper

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Post Mon Mar 24, 2014 9:13 am

Re: Wiring Trailer Plugs - STANDARD WIRING PRACTICE

burls wrote:Just wondering what others have done for the charge wire for the backup battery?


On my camper trailer I had a 6mm/50A wire running from the 2nd battery on the car (fused at the battery end) to the number 2 pin (round 7 pin plug) then to the battery bank in the trailer.
As we were driving it provided sufficient trickle charge to equalise all batteries, effectively controlled by the Piranha DBE180. Bear in mind we had the fridge in the car so there was zero draw on the camper batteries when we were driving along. If you have a fridge in the camper drawing constant current, you'd want something larger.
Never had an issue with that set up.

The proper set up would be via an Anderson plug and dedicated battery charging cables, say 50mm2.
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