there are two switches to operate it, one at each doorway I need a wiring diagram

John Selby, October 2017

I hesitate to offer these diagrams to someone clearly with no idea - and not even resourceful enough to use Gooogle Internet search.

If you do not, 100% understand these diagrams and the suggestion that the second lamp is merely an extension from the first, then take heed of the other contributor and ask someone competent to look at the job.

http://www.ceilingrosewiring.co.uk/tag/2-way-lighting-circuit/

http://www.diyhowto.co.uk/projects/two-way-light-switch-method1.htm#.WedNenaQzmE

Gareth, October 2017

No. You need someone competent to do the job. Get electricity wrong and it can kill someone who matters. Or you. Dead

Gdfh, October 2017