When I went to my boy's place where we store my new puck(new to me)I noticed two sockets that would plug into the socket near my towhitch only trouble is I have only one socket.At first I thought it was for 240 hook up but I found another one for that up the side of the van.
So why would there be two,only had one years ago when I borrowed a van for a week,can,t work it out .
Anyways Merry Christmas all.

HI Randa,I can't take a photo for a couple of weeks as it is being stored 100 miles away but as I remember it both sockets seemed identical but different coloured wires,but it,s the one you p!ug into your vehicle only on mine there are two,if that makes sense.

When you get a van with 2 x 7 pin plugs on it .........one black and one grey ......
The black one works the external lights when towing ..............the grey one works whatever internal stuff there is while towing

Fridge, internal lights, water pumps, toilet flush etc ...............depending on whatever is fitted.

If a car is wired up just to tow a trailer it will only have the black one at the towbar.
If wired up to tow a van it will have 2 sockets at the towbar one black and one grey.

You can get away with just the black one as external lights are a legal requirement when towing but without a grey one the fridge etc will not work until you get to site and plug in a hookup lead.

Newer setups have a single larger plug\socket arrangement combining the 2 in one plug.

My car had a single 13 pin socket, so I used a Kampa adapter which was
a 13 pin plug for the car and leads for the two 7 pin caravan sockets.
It is a beautifully made adapter but cost around £30

Either 89 or 91 we bought our Burstner which had the "new" "going to be fitted to ALL european caravans" 13 pin electrics, I made up my own cable initially, then we swapped cars twice and had a dedicated 13 pin socket put on each of them, I still have the cable some years later works fine, I need it for my trailers otherwise you could of had it

Good point Agger, get the car properly changed over to 13pin,
making sure it has 2.5 cross section where necessary and
includes power to fridge and battery charger.

I thought this was going to be a 4 candles thing, but it weren't.

So basically what you guys are saying is I need a thirteen pin socket on the towing vehicle and then an adapter for the two on the puck or I need another seven pin added to the towing vehicle if I want the leisure battery to charge and the fridge to work while travelling.
I have had a couple of drinks so excuse me if I sound dumb lol.

Good morning Chris

I was/am in your position, I think. We have an Eriba Triton with a 7-pin socket which powers the external electrics (lights, indicators, brake-lights). We have a fridge in the Eriba which perforce remains off (un-powered) whilst we travel. Investigations here (in France) revealed that fitting a 13-point system would be very expensive. Even an extra 7-point plug for the fridge was going to be pricey. Being a mean old Scot I decided not to bother with the cost of wiring up for the fridge. Instead, we use our old cool-box which goes in the car and plugs into the 12-volt socket. The cool-box takes everything we need for our first day, then we start using the camp-site mains to do the fridge. Same on our subsequent travels. The fridge will stay cold/cool for a surprisingly long time, esp if you can put an ice-block in it for lengthy travel. We had an all-day journey home in France in very warm weather this year and I was surprised at just how cool the fridge was at the end : all the contents were fine.

Randa has pretty much said all this, so forgive any repetition.

Hope this is useful.

Best wishes

David

Well ,what a fantastic set of replies.
Mostly we will be staying on no hook up sites and the only lighting we would have would be 12volt so I could really do with some means of charging the battery,the fridge I could use gas.
I don't,t suppose I could just swap the plugs over when I stop towing and then I would be using the vehicles battery or perhaps it don,t work like that.
I will make enquiries about a second socket see how much it will cost,other than that perhaps take two batteries with me,both fully charged before we leave home. Many thanks again for all the help full replies,least were not alone.

Hi Chris,
In my early days of caravanning, pre 13 pin sockets, I had the normal 7 pin socket, with an extra single 1 pin socket put in alongside the 7 pin socket.
This was fitted by an auto electrician, with a single wire of 2.5mm copper cross section, purely for the fridge. As I remember, it had an in line fuse (can't remember the rating) and went through a relay which only came on when engine was running, and went off (disconnected power from battery) when engine was switched off (so didn't drain battery when stationary) Could be your cheaper answer to the relevant problem. (single plug and socket was a push in fit )
................Ian.