13 pin and 7 pin Electrics Difference
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- Опубліковано 5 лют 2025
- 13 pin and 7 pin Electrics Difference
This video demonstrates the difference between 13 pin and 7 pin electrics and the adaptor / adapter that can be used to convert a 7 pin plug to a 13 pin plug for a trailer.
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I guessed that 13 pin connectors would have..... 13 pins.
But this video hasn't told me the difference. I mean what are the advantages of 13 pin - why did it change etc?
Hi, Originally 7 pin was the style fitted to all basic trailers - this was sufficient to feed all your electrics. If however you had a caravan you had two x 7 pin sockets - one for your lights (as per a standard trailer) and one to power all you ancilliaries - Fridge etc. The newer 13 pin style came about for a few reasons - 1) Reverse lights were introduced to trailers / caravan (so an addition cable / pin would be required) 2) There was a desire for caravaners to have just one plug 3) The original 7 pin plugs are just push in and as a result can slide out - the new 13 pin style pusshed in and then rotates by 90 degrees to look it in to the tow vehicle. In my opinion 13 pin is the way to go on vehicles, it is future proof, allows you tow a caravan / trailer, plus has the benfit of locking into the tow vhicles socket and you will ave a feed for a reverse light. Hope that helps!
My 13 pin plug pushes into the 13 pin socket and all electrics work OK, but am I meant to lock it in by screwing it in? It seems very loose without this. Don’t quite understand as the collar doesn’t seem to rotate to allow this?
@@keithslater340 Hi Keith, as you describe your plug should align and push in, but then you should either twist just the collar or the whole plug through 90 degrees clockwise, which locks it in. This should also mean that the circle that is on your plug sits in the flap of your Towbar socket. By turning the plug it looks it in place.
Thanks!
if i connect via adapter 7pin to 13pin, where i can take power feed for fridge and constant+ on vivaro 2010
Hi,
If you have a 7 pin socket on your Vivaro you sadly dont have the feed to power any ancilliaries, such as a fridge. the solution would be to get a towbar fitted to change / upgrade your electrics to 13 pin to give you the permanent live feed needed for the fridge etc. Hope this helps
@@bigbeartrailersoutdoor1127 is pin 10 for fridge live feed at all times or after ignition?? Can I take it from cigarette lighter?
@@rosssenin8172 Hi, Tried to paste a wiring diagram photo, but it wont let me. Enclosed is a link and half way down the page you will see teh diagram - see pins 9 & 10 caravanchronicles.com/guides/13-pin-socket-basic-fault-finding/
I assume you need 13 pin electrics on your tow vehicle if you are towing a caravan ?
If your Caravan is modern (post 2012) 13 pin on yoru tow vehicle is advisable / easiest.
So what about 7s and 7n?
Hi, If you are towing a caravan built prior to 2008, it will have two plugs (one Black and One Grey). The Black is to power the lights (as a normal trailer would), the grey is for all the ancilliaries, such as fridge. This 2 plug system combines the single 7 pin 12N electrics socket with a 12S electrics socket.
Adapters are available to convert from a 13 pin tow vehicle to the twin system, but my personal choice in this scenario would be to change the plug on the caravan to 13 pin style - avoids the need for an adapter and tidies up the whole wiring position. You do have to get used to operating the 13 pin plug and use, but once up and running in our opnion they are better.
Hope this helps.
I can count pins. Must people want to know which to use when.....
To try and help. I would always recommed a 13 pin plug on a tow vehicle if planning on towing (now or future) a Caravan or a larger commercial trailer. By doing so, not only will you have the 13 pin plug that twists to engage into the tow vehicle, but you will have the feed for a reverse light and also the ancilliaries (for a caravan)
My vehicle has the 7-pin (only) socket fitted, due to the fact that it is only wired to supply minimum trailer light requirements. I understand that if you wanted the additional wiring to supply the socket with Live Power to run fridge/leisure battery charging etc., then the 13-pin socket would be required. I know there is a 7-pin (only) plug to fit into the 7-pin (only) socket, as well as a 7-pin (only) plug configured in the 13-pin layout to fit into the 13-pin layout socket. What I cant understand is why there isn't a 7-pin (only) socket configured in the 13-pin layout, so that you could visibly see that the socket is only capable of supplying basic trailer lights, but could still plug in the 13-pin plug, but not have the addition electrical feeds, but at least you wouldn't need to be buggering about with adaptors etc. Just another way of getting you to spend more money eh? Or is there another stupid configuration inside the adaptor that switches pin feeds? I bet there is. Standardisation? Nope!