If you need to move house, go on vacation with a caravan, dispose of green waste, or have a hitch is really handy. On this page, we will show you the electrical connection of a trailer hitch of a Mercedes Cla . Indeed, regardless if the installation procedure is not difficult, it is necessary to clarify some points to consider this intervention without any issue. First of all, we will see what the electrical wiring harness of your motor vehicle hitch consists of, then, in a second step, how to make the electrical connection of the hitch of a Mercedes Cla .
What’s the wiring harness for a Mercedes Cla hitch trailer?
Why do we have to connect a wiring harness with the hitch trailer of a Mercedes Cla?
So we will begin our article by detailing the basics of a wiring harness of a Mercedes Cla. 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 necessary and earlier 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 obligations, you will need to install a wiring harness connection on the hitch trailer of your Mercedes Cla . We will concentrate on this in this article, if you want to find out how to install the hitch of a Mercedes Cla, please see our article on this theme.
What is the electrical connection of the trailer hitch of a Mercedes Cla?
We will now fairly quickly show you 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 Mercedes Cla. There are two different systems of electrical connection for a hitch, here they are:
- The 7-pin electric plug for a Mercedes Cla trailer, 7 pins : This is the classic plug that will be determined on all Mercedes Cla hitches. This electrical connection will enable you to transmit all the lighting functions needed for the rear signalling of your trailer, you will find 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 Mercedes Cla: This plug system is specifically used for caravans that involve 12 volts inside to supply the various electrical devices in the cabin. This sort of connection requires 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 car is switched on).
How do I hook up the wiring harness of a Mercedes Cla?
To conclude this article, we will fairly quickly show you you how to make the connection of the wiring harness of your Mercedes Cla .
How to make the connection of the wiring harness of an old Mercedes Cla?
To install the wiring harness of an old Mercedes Cla, you will have to go and get all the necessary cables in the rear lights of this one. We recommend you to call in a motor vehicle electrician to do this intervention because it is difficult, but we will nevertheless summarize the most important steps to be carried out:
- Take out the trunk lining from your Mercedes Cla 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 Mercedes Cla?
For new Mercedes Clas, the wiring harness is much easier to connect:
- You can use a multiplexable box, you will find particular ones for your Mercedes Cla 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 Mercedes Cla so that you can route the cables from your box to the front of your Mercedes Cla 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 Mercedes Cla?
Finally, to conclude this article we will fairly quickly show you you how to make the electrical connection of a caravan on your Mercedes Cla . To do this you will inevitably have to go through one of the previous steps, it’s up to you to choose the one that points 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 you have any further questions about the Mercedes Cla, do not hesitate to consult our Mercedes Cla category.
