easily done yourself, with a soldering iron, some heat shrink and some cable.


Cut the cable about 10cm from the plug, strip about 15mm off the inner. Do the same with the new extension bit of cable leaving enough space to slide thin heat shrink up out of the way of what will become you solder joint. On the original loom add a long heat shrink section which will cover the entire new section. Solder the inner cables, then cover the inners with the thinner shrink. Then cover the entire section with the outer shrink heating the ends.This is the most economical way to do what you want.

Thanks for the ideas guys,
I think i may have found a solution though, my main concern was tracking down the connectors and then i remembered this place-

http://polevolt.co.uk/acatalog/Timer_Connectors.html

So i'll make it up myself after all. Its a pretty good website this one, got loads of bits and bobs.
Guy