Now sorted, i have been told j2 harness is used with slight alteration around the back of the dash.Fortunately a new j2 loom was in with the box of new parts which came with the car, one less thing source. Thanks Chris.
Thanks Dennis for your reply Ted Hack is sending me a colour coded diagram that he did for the J1, as you say it looks fairly straight forward i have to run a bit of extra wire to the interior roof light and switch as my car is a Salonette. Chris.