On Thursday, August 11, 2016 at 9:20:38 AM UTC+1, wrote:
Much better to use a SPST relay between the two strapping wires of the existing 2-way switch wiring. That will force the lights on for the time period regardless of the existing state of the lights.

Owain,

Just getting round to this project. I have the necessary adapters and screw-in bits to get the electrical connections from the lamp holder to outside the control box where I can work with them.

In your post above you refer to strapping wire, which I think is another name for 'switch wire'?

I also have been doing some looking for relays, would this simple one do the job?

http://uk.farnell.com/finder/26-01-8-230-0000/relay-spst-no-250vac-10a/dp/1455193?mckv=kmyXOTEc_dc|pcrid|78108381549|&gross_ price=true&CATCI=pla-131290224789&CAAGID=15002612229&CMP=KNC-GUK-GEN-SHOPPING-FINDER&CAGPSPN=pla&gclid=CjwKEAjws5zABRDqkoOniLqfy wESJACjdoiGH-lh80XVK6jwSavclFO_hIFUX1Py3j_0iO5CgN810xoCNebw_wcB &DM_PersistentCookieCreated=true&CAWELAID=12017339 0000050060

Regards
Jon

On Wednesday, August 10, 2016 at 10:02:09 PM UTC+1, Jon Parker wrote:
snip everything

Project now completed successfully, thanks for the input.

JP

On 24/10/2016 17:14, Jon Parker wrote:
On Wednesday, August 10, 2016 at 10:02:09 PM UTC+1, Jon Parker wrote:
snip everything

Project now completed successfully, thanks for the input.

JP

So what was the final solution?

--
Cheers,
Roger
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