converting two way switch to one way with dimmer

[JohnW2]

Not if the Line (or SL) is at the switch end - as it would be with the conventional two strapper method.

You are presumably assuming two or more cables at the switch (and the 'old' method of 2-way switching). I was (clearly incorrectly, given the recent revised description/photos) thinking in terms of a single cable between switch and dimmer.

Anyway, given the new description, what the OP can do (leaving the cables live) is put the two (currently joined) reds into one terminal of a terminal block, together with either(**) the third red or the blue, and put the fourth wire (red or blue) into a separate terminal in the block [The "either" being determined by experiment to achieve the functionality the OP wants - if what he agreed with before was correct, then one of those options would result in the light being on permanently].

Kind Regards, John

 

[MarcoM]

You are presumably assuming two or more cables at the switch (and the 'old' method of 2-way switching). I was (clearly incorrectly, given the recent revised description/photos) thinking in terms of a single cable between switch and dimmer.

Anyway, given the new description, what the OP can do (leaving the cables live) is put the two (currently joined) reds into one terminal of a terminal block, together with either(**) the third red or the blue, and put the fourth wire (red or blue) into a separate terminal in the block [The "either" being determined by experiment to achieve the functionality the OP wants - if what he agreed with before was correct, then one of those options would result in the light being on permanently].

Kind Regards, John

thanks will try this.

my question is why is there one yellow cable at one switch and not at the other?
wasn't yellow supposed to be the common link between the two switches?

 

[JohnW2]

thanks will try this. ... my question is why is there one yellow cable at one switch and not at the other?

That's exactly my point - that yellow conductor cannot be part of a cable which just goes from switch to dimmer. It therefore must go to some other place (maybe a junction box, perhaps the light).

We therefore don't really know how the wiring is arranged. However, if you do as I suggested, you will simply be emulating what the switch does in one of its positions (that's why I said you will have to try two options, by experiment) - so, if it is working with the switch now, it will still work the same, regardless of how it is all wired.

Kind Regards, John