Regardless of you need to move house, go on vacation with a caravan, dispose of green waste, or have a hitch is fairly handy. On this page, we will show you the electrical connection of a trailer hitch of a Mercedes Benz GL Class . In actual fact, regardless if the set up process is not difficult, it is necessary to describe some details to consider this task without any problem. Firstly, we will see what the electrical wiring harness of your car hitch contains, then, in a second step, how to make the electrical connection of the hitch of a Mercedes Benz GL Class .

install-trailer-hitchmercedes-benz-gl-class

What’s the wiring harness for a Mercedes Benz GL Class hitch trailer?

Why do we have to connect a wiring harness with the hitch trailer of a Mercedes Benz GL Class?

So we will start our article by explaining the principles of a wiring harness of a Mercedes Benz GL Class. 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 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 meet all the electrical regulations, you will need to install a wiring harness connection on the hitch trailer of your Mercedes Benz GL Class . We will focus on this in this article, if you want to learn how to install the hitch of a Mercedes Benz GL Class, please see our article on this subject.

What is the electrical connection of the trailer hitch of a Mercedes Benz GL Class?

We will now fairly quickly show you how the electrical connection of your hitch functions. The connection uses the 12-volt current from your car to power the hitch lights on your Mercedes Benz GL Class. There are two different systems of electrical connection for a hitch, here they are:

  • The 7-pin electric plug for a Mercedes Benz GL Class trailer, 7 pins : This is the classic plug that will be found on all Mercedes Benz GL Class hitches. This electrical connection will enable you to transmit all the lighting functions necessary 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 Mercedes Benz GL Class: This plug system is mainly used for caravans that necessitate 12 volts inside to supply the different electrical devices in the cabin. This sort 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 Mercedes Benz GL Class?

To conclude this article, we will fairly quickly show you you how to make the connection of the wiring harness of your Mercedes Benz GL Class .

How to make the connection of the wiring harness of an old Mercedes Benz GL Class?

To mount the wiring harness of an old Mercedes Benz GL Class, 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 car electrician for this intervention because it is difficult, but we will nevertheless summarize the main steps to be performed:

  • Take out the trunk lining from your Mercedes Benz GL Class to access the rear light unit.
  • Find 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 Benz GL Class?

For recent Mercedes Benz GL Classs, the wiring harness is much easier to connect:

  • You can use a multiplexable box, you will locate particular ones for your Mercedes Benz GL Class and universal models. It’s up to you to select according to your budget, know that a universal version costs between 30 and 60 euros.
  • Take out the trunk lining from your Mercedes Benz GL Class so that you can route the cables from your box to the front of your Mercedes Benz GL Class and connect them to your fuse box.
  • Install the circumstance in the trunk properly.

    • 0

  • You don’t have to retrieve your cables from the trunk and connect them to your outlet.

How do you hook up the power to a trailer on Mercedes Benz GL Class?

Finally, to conclude this article we will fairly quickly show you you how to make the electrical connection of a caravan on your Mercedes Benz GL Class . To get this done you will automatically have to go through one of the previous steps, it’s up to you to select the one that means your model and your budget. After you have done 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 want more tutorials on the Mercedes Benz GL Class, go to our Mercedes Benz GL Class category.