If you are going to make miles, it is important that the chassis, wheels, brakes and the towing connection is of proven brands.

In this field Alco is a market leader.

On the photo you can see a Alco towing connection. It has small brake pads, and will prevent "snaking" until a certain point. You can also see the Jockey wheel. This should be changed to a wider air filled wheel, to prevent "dig down" in soft ground.

The hand brake is spring loaded, and need to be pulled hard to compress the spring. You need this spring action to prevent the caravan to move backwards.
 

On this photo you can  see the electric cable that connects to the tow car via a electric plug.

Most caravans come with a 13 pin plug. You can still connect to your towing bracket even if it is 7 pin type. All you need is an adapter.

If however you want the refrigerator to run on 12 volt while you drive, and 12 volt to some of the lights, in the caravan during a short stop, or while you are setting up the camper on the campsite, the the car need a 13 pin plug also on your car. The water pump and the toilet flush is also 12 V in most cases.

To prevent your car battery to go flat, normally a relay is installed, so the refrigerator is disconnected when the ignition key is off.
 

If you have a moover installed, then you need a battery installed in the caravan as well. The moover comes with a battery charger and you do not need to convert to a 13 pin connection on the tow car, for this reason alone. You can also get light for a limited time from this battery. Remember however that the caravan 220V to 12 V converter must be disconnected if the battery is powering the caravan 12 V circuit. A relay is used for this.

The electric installations are best left to a specialist. This way you are sure it is done correct. The caravan is under local regulations as well, and some of the installations must only be done by authorised personnel.

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