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I guess I have yes, invaluable help here though, as usual, especially from you PrinceofDarkness, cheers. As a matter of interest, what's the difference with double insulated light fittings, is it simply that the cable has extra insulation.

The fittings are to be either non metallic or double insulated, as my assumption is that the cabling for the lights is two core only. The switches are all white plastic.

Well, I tried this method and neither combination would make the test lamp light. I sort of suspected this would be the case, as the earth had been cut back more so than the other two wires, the previous electrician had obviously decided to use this cable which he must have had to use up, to...

Superb, I will try that method. Thanks very much.

I assume that I could put a neon screwdriver into the terminal screw of the block and see it if lights? Though I don't really wish to use those. Is there any other method of testing which is the live wire...?

If I was to connect them up the wrong way round, would the fuse simply trip?

I have no test meter, no.

The switch has not been touched, so it's as it was. It is the light fitting I am unsure about, as I do not know which of the two red wires go into the live and neutral connections.

No, there are no other wires present, each cable for each light is simply twin and earth, and it is just this one cable in question, which is two reds and earth. Currently, in the connector block, both red wires are in separate terminals. Previously, in the light fitting, one of the red...

We have 5 wall lights, and the decorator has taken them all off, and just left terminal blocks on temporarily. Four of them are ok, but one of the cables consists on two red wires & earth. I do not know now, which was previously connected to the live/neutral fitting of the light. Does...

Thought so, thanks.

If you cannot start off with both switches off though (i.e. with the light off that way), then the above scenario cannot be recreated. That's what set off my question as to what's considered good practice as one set of two way switches does work that way, and one doesn't. Although they all work ok.

Well, I changed the switch and all is fine, more straightforward than I thought, don't know what I was worrying about now. Thank you all, for taking the time to respond and help. I'm interested to know - what is considered good practice as regards to two way switches, i.e. should both...

Yes, the earths are there, as they should be.

Thank you, and looking at all of the replies, I think I'm getting it. Can you tell me, do I still need to link the two COM terminals with a small wire on the new switch?

Thank you very much for your quick replies guys, but I think I might need it explaining. For example, the old switch has 3 terminals at the top (and bottom) as I mentioned, but the new one has only two. I understand that L1 and L2 are one and two way.

I would be grateful if someone could help me with replacing a 2 gang 2 way light switch please. The one I'm taking off has different terminals than the new one. I could make it easy on myself I guess and try to buy one with the same terminals, but most seem to be like the new switch which I...

Well, it looks like my cherished Leonard/Mira 722 shower is going to the shower scrapheap in the sky, it's as much to fix it as a new one is. So, new it is. I'd certainly go with Mira again, my shower is 30 years old and you can still buy the parts from them, so any Mira recommendations...

Thanks for all the advice. I will do as suggested and hopefully bring it back to 100%.

Moderator - might I make a suggestion, why not just edit the post and take the offending article out? The poster gave me some advice concerning the cartridge I think, but with you deleting the whole post, I've lost his advice. Would it be worth considering editing such posts instead of deleting...