Replacing a old light switch with a dimmer switch

[tim bartrop]

Good afternoon all
The light switch in the wall has

L2 Blue and red wires in
L1 has Black and Yellow in
at the bottom there is also a second L1 with a red wire ok

Now on my new dimmer switch there is a L2 COM and L1 where do I connect the single red wire which is in the L1 connection.

 

[winston1]

Looks like a 2 way circuit.

 

[ban-all-sheds]

L1 has Black and Yellow in
at the bottom there is also a second L1 with a red wire ok

Two terminals each labelled L1?

I doubt it.

Now on my new dimmer switch there is a L2 COM and L1 where do I connect the single red wire which is in the L1 connection.

[wiki]Electrics:Two-way-lighting[/wiki]

You do realise that if you replace one of a pair of 2-way switches with a dimmer, when you turn the light on with the switch it will come on at whatever level the dimmer was set to, so if that's wrong you'll have to go to the dimmer switch to change it?

 

[ban-all-sheds]