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#Diagram 7 pin trailer plug only 5 wires how to
#Diagram 7 pin trailer plug only 5 wires code
#Diagram 7 pin trailer plug only 5 wires trial

To determine how to wire up trailer lights, you need to know whether your vehicle has a factory-installed trailer package and whether a plug-and-play T-connector is available for it on the market. They developed a universal trailer connector that has been used on their vehicles since the 1990s. This organization (United States Council for Automotive Research) united three major American automakers (Chrysler, Ford, and GM) in their intention to advance automotive technologies. Many modern tow-capable trucks and SUVs, especially those by the Big Three, come equipped with trailer packages from the factory as part of the USCAR program. Now that you know the types of connectors, you have to determine what you have on your vehicle to make the connection to a trailer.

Truck Trailer Light Wiring: Options & Packages

#Diagram 7 pin trailer plug only 5 wires code

However, in the simplest scenario on how to wire trailer lights, if you’ve bought a new vehicle, the only thing you will have to do is to find a factory-installed connector on it and get the right harness to attach it to the trailer.ħ-way connector: Trailer wiring color code explanation Because installation works related to electricity scare many vehicle owners away, they prefer the experts at trailer shops to have the job done for them instead of trying to figure out how things work. How many amps do electric trailer brakes draw?īefore you tow any trailer, you should make sure it has functional trailer lights. How much voltage should a trailer brake controller put out? What is the brown wire on trailer lights? What is the color code for trailer wiring?

Truck Trailer Light Wiring: Options & Packages.

7-way connector: Trailer wiring color code explanation.

6-way connector: Trailer wiring color code explanation.

5-way connector: Trailer wiring color code explanation.

4-way connector: Trailer wiring color code explanation.

The 7 pin round Type 1 and Type 2 connectors are found in all states and territories throughout Australia. Since the introduction of the mandatory 7 pin connector, all wiring connections have been standardised and the use of a specific trailer cabling involving seven wires and standardised colouring has also been adopted. If auxiliary circuits are required, then the 12 pin Type 3 connector would be preferable.ħ pin connectors are mandatory on all new trailer units first registered after January 1, 1988, allowing sufficient connections to cope with all lighting requirements and electric brake controls. Please note that because of interchangeability problems that may arise, it is recommended that pin number 5 in the 7 pin connectors be used only for service brakes. For reference - a Type 3 connector is the flat variety and this comes in 7 pin and 12 pin. Both Type 1 and 2 plugs have a locating notch at the bottom. The larger round Type 1, 7 pin plug seems to be quite popular in Victoria. Type 1 is the large 7 pin connector type with a PCD (Pitch Centre Diameter) of 20mm, whilst Type 2 is the small 7 pin connector type with a PCD of 13mm. There is a large and small variety of this plug and socket type. More information can be found on the Australian Government's - Department of Infrastructure, Transport, Regional Development and Local Government website. This applies to all types of trailer plugs used in Australia. Also, an important thing to remember - it is the WHITE wire that is the earth in trailer wiring not the green or black wires.

#Diagram 7 pin trailer plug only 5 wires trial

Knowing these colour codes can save you the time consuming exercise of testing lights by means of trial and error. The following diagrams and bullet points provide the Australian Standard for 5 and 7 pin plugs and sockets for trailers and caravans. Well, we are not going to go too in depth with all these types - only the more commonly used ones.

As mentioned above, there are a number of connectors from 5 pin round, 6 pin round, 7 pin round small, 7 pin round large, 7 pin heavy duty, 7 pin flat, and even a 12 pin flat - phew!! and not to mention all the adapters available, it can all be quite confusing. Trailer wiring can be difficult to get your head around. Although there are some people who have the aptitude to test trailer, camper and caravan lights, diagnose faults, and even fix them - this article does not intend to be a replacement for an auto electrician (which is a trade), and instead should only be used as a guide. There quite a few types out there, and some types are more predominantly used depending on the state you live in. This article will provide some tips for trailer wiring, showing you the various plugs and sockets used in Australia.