Regardless of you need to move house, go on vacation with a caravan, get rid of 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 A4 . In fact, regardless if the set up process is not difficult, it is required to clarify some points to consider this intervention without any problem. First of all, we will find out 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 A4 .
What’s the wiring harness for a Audi A4 hitch trailer?
Why do we have to connect a wiring harness with the hitch trailer of a Audi A4?
So we will commence our content by explaining the basics of a wiring harness of a Audi A4. In order to discover how it functions, you must already discover its necessity. Whether you have a trailer or a caravan to tow, it is necessary and above all mandatory by the highway code to respect certain laws, 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 regulations, you will need to install a wiring harness connection on the hitch trailer of your Audi A4 . We will focus on this in this post, if you want to learn how to install the hitch of a Audi A4, please find out our content on this topic.
What is the electrical connection of the trailer hitch of a Audi A4?
We will now fairly quickly describe how the electrical connection of your hitch functions. The connection uses the 12-volt current from your motor vehicle to power the hitch lights on your Audi A4. There are two different systems of electrical connection for a hitch, here they are:
- The 7-pin electric plug for a Audi A4 trailer, 7 pins : This is the classic plug that will be determined on all Audi A4 hitches. This electrical connection will allow you to transmit all the lighting functions required for the rear signalling of your trailer, you will locate a plug for each function (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 A4: This plug system is mainly used for caravans that require 12 volts inside to supply the various electrical gear in the cabin. This type of connection necessitates 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 A4?
To conclude this content, we will fairly quickly describe you how to make the connection of the wiring harness of your Audi A4 .
How to make the connection of the wiring harness of an old Audi A4?
To install the wiring harness of an old Audi A4, you will have to go and get all the required cables in the rear lights of this one. We advise you to call in a motor vehicle electrician for this intervention because it is difficult, but we will nevertheless summarize the main steps to be performed:
- Remove the trunk lining from your Audi A4 to access the rear light unit.
- Locate 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 A4?
For modern Audi A4s, the wiring harness is much less complicated to connect:
- You can use a multiplexable box, you will locate specific ones for your Audi A4 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.
- Remove the trunk lining from your Audi A4 so that you can route the cables from your box to the front of your Audi A4 and connect them to your fuse box.
- Install the circumstance in the trunk properly.
- 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 A4?
Finally, to conclude this content we will fairly quickly describe you how to make the electrical connection of a caravan on your Audi A4 . To achieve this you will inevitably have to go through one of the previous steps, it’s up to you to choose the one that means 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.
In the event that you have any additional questions about the Audi A4, do not hesitate to consult our Audi A4 category.
