I'm putting in two new tube's into my garage however one of the them was removed a long time ago but now I have replaced it. The garage has two switches, one on the LHS of the internal door and one on the LHS as you walk in to the garage. Both switches should operate both tubes. I've drawn an image of my setup in paint, hope it makes it clearer. The problem I have at the moment is not being be able to get everything working correctly. I have succeeded in keeping the furthest tube light nearest the garage door on permanently but nothing else. I can't figure out the correct configuration. Especially with the first tube nearest the internal door which has four cables coming into it so four black/neutral, four red/live and earth. Seems from the setup a different type of wire exists between the two switches which has red/blue/yellow wires. As per the diagram the yellow wires attach to the common terminals in both switches. It would seem that the power comes into switch one which is where the incoming power connects to the common. Both switches have three terminals on L1/L2/COMMON.

Here's the layout.

Did you take a note of the wiring before you disconnected it?

Well only tube 1 has ever been connected and that had all the live/red wires bundled into a plastic terminal block, three of the neutral wires going into the neutral of the tube and one neutral going into the live of the tube.

I also changed switch 1 over because the rocker was broken but I'm fairly sure that I put the wires back how they came out.

Please stop and think for a moment about the concept of "one neutral going into the live of the tube" - does it make sense? Would a light work with only neutrals connected to it?

How about spending a bit of time learning how lighting circuits are wired, and then using your multimeter to identify which cable is which....

http://www.ultimatehandyman.co.uk/two_way_lighting.htm

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I'm sorry - I can't come in to work today, the voices are telling me to stay at home and clean the guns.

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Ok good point. I just had a look at the url and it would seem from first look that the switches are all wired correctly. Its now just the lights that are not connected. I don't own a multimeter and anyway even if I had one how do I use it to identify the wires etc