If you need to move house, go on holiday with a caravan, dispose of green waste, or have a hitch is pretty handy. In this post, we will describe the electrical connection of a trailer hitch of a Audi A7 . In actual fact, even if the installation process is not complex, it is necessary to clarify some details to consider this work without any problem. Firstly, we will see what the electrical wiring harness of your motor vehicle hitch involves, then, in a second step, how to make the electrical connection of the hitch of a Audi A7 .
What’s the wiring harness for a Audi A7 hitch trailer?
Why do we have to connect a wiring harness with the hitch trailer of a Audi A7?
So we will begin our content by explaining the fundamentals of a wiring harness of a Audi A7. In order to understand how it works, you must already understand its necessity. Whether you have a trailer or a caravan to tow, it is important and above all mandatory by the highway code to follow certain requirements, here they are:
- A solid chassis for the trailer…
- Wheels that fit.
- An electrical connection.
- A license plate in plain sight.
- A stoplight repeater.
- A traffic light repeater.
- A blinker repeater.
- License plate illumination.
- A fog light repeater.
In order to fulfill all the electrical requirements, you will need to install a wiring harness connection on the hitch trailer of your Audi A7 . We will concentrate on this in this post, if you want to learn how to install the hitch of a Audi A7, please see our content on this theme.
What is the electrical connection of the trailer hitch of a Audi A7?
We will now fairly quickly describe how the electrical connection of your hitch works. The connection uses the 12-volt current from your motor vehicle to power the hitch lights on your Audi A7. There are two different systems of electrical connection for a hitch, here they are:
- The 7-pin electric plug for a Audi A7 trailer, 7 pins : This is the traditional plug that will be located on all Audi A7 hitches. This electrical connection will enable you to transmit all the lighting functions needed for the rear signalling of your trailer, you will locate a plug for each action (left and right indicators, ground, fog light, left and right position light, left and right brake light).
- Electrical connection for caravan with 13-pin plug for Audi A7: This plug system is mainly used for caravans that necessitate 12 volts inside to supply the various electrical devices in the cabin. This type of connection needs the use of an adapter. The extra pins will bring the 12 volt power permanently (to recharge a battery in the caravan) and the 12 volt power in use (to use the 12 volt equipment when the motor vehicle is switched on).
How do I hook up the wiring harness of a Audi A7?
To end this content, we will fairly quickly describe you how to make the connection of the wiring harness of your Audi A7 .
How to make the connection of the wiring harness of an old Audi A7?
To mount the wiring harness of an old Audi A7, you will have to go and get all the necessary cables in the rear lights of this one. We suggest you to call in a motor vehicle electrician to do this intervention because it is complex, but we will nevertheless summarize the main steps to be performed:
- Take out the trunk lining from your Audi A7 to access the rear light unit.
- Identify the wires that correspond to each of the taillight functions.
- Connect them to the lugs on the wiring harness on your hitch.
- Close the whole thing down.
How do you connect the wiring harness of a recent Audi A7?
For modern Audi A7s, the wiring harness is much simpler to connect:
- You can use a multiplexable box, you will locate specific ones for your Audi A7 and universal models. It’s up to you to choose according to your budget, know that a universal version costs between 30 and 60 euros.
- Take out the trunk lining from your Audi A7 so that you can route the cables from your box to the front of your Audi A7 and connect them to your fuse box.
- Install the circumstance in the trunk effectively.
- You don’t have to retrieve your cables from the trunk and connect them to your outlet.
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How do you hook up the power to a trailer on Audi A7?
Finally, to end this content we will fairly quickly describe you how to make the electrical connection of a caravan on your Audi A7 . To achieve this you will automatically have to go through one of the previous steps, it’s up to you to choose the one that corresponds to your model and your budget. After you have conducted this, the last step will be to buy an adapter that goes from a 7-pin plug to a 13-pin plug so that you can benefit from the 12 volt current in your caravan. These adapters come at different prices, you will need to count between 15 and 40 euros. All you have to do is plug it into your 7-pin plug.
If perhaps you have any further questions about the Audi A7, do not hesitate to consult our Audi A7 category.
