caravan 13 pin plug, what are the consequences

[macafee2]

Originally Posted by TourerSteve

Servicing potentially could have picked this up with his test equipment but would say that a more in depth test will be carried out on the external lighting as a legal requirement
Is it possible that someone has actually changed out the 13 pin plug at some time .
As it stands you have belt and braces with running PINS 9 & 10 through a switched live which will protect your car battery while connected up

I would think you could probably sort the problem out by following the following steps

1, Energise interior lights with caravan battery .
2, Connect caravan to car (needs permanant live to do this )
3, If caravan lights go out (Relay energised) swap PIn9 to PIN10
4, If caravan lights stay on , switch ignition on to energise relay ,
5, If lights go out that means PIN10 correct
6, Once above correct disconnect caravan from car

To check PIN 9 permanent Live

7, Disconnect caravan battery ensuring both terminals are air gapped
8, Connect caravan to car Car should now power caravan lights etc without caravan battery
9, If not , switch ignition on , if lights work ,that would indicate the caravan is getting power from PIN10 .(This should not happen)
10, Disconnect car from van and reconnect caravan battery

step 8 should be your last step . unless some wiring is adrift in the caravan and would mean testing further .
Hope this makes sense . I'm interested to see what you find but all of the above can be done from the 13 pin plug
The last lunar I owned I actually swapped the 12s and 12n plugs to a 13 pin plug to suit the electrics on my car with no issues

I will feed back what I find. I found the Lunar caravan wiring diagram but now need to find the magnifying glasses as its far to small to read.
Your post is very helpful thank you.
At the moment I cant get car and caravan together as there is stuff in the way but it can all be moved.

thanks again really appreciate your posts on this one

macafee2