The original 13 pin plug on my caravan has failed. Corrosion mainly due to being exposed during winter storage. I have a new one from Sealey. Different assembly but have worked out the alignment it is now just the wiring. Not all the colours are the same as the wiring diagram, but I have the old plug and the wires that connect it from where I cut it off. Not all the terminal are numbered on the new plug. Can I assue they are in order clockwise? The middle raised three are 1, 2 and 4. Then 6,7,8,9 then 12 and 13 are numbered. The terminals in between are not numbered. Will these go in order. Between 13 and 6 there are two terminals not numbered. Can I assume these will be 3 and 5? Also between 9 and 12, can I assume these are 10 and 11?. Help!

Cheers Concrete