I have one ordinary switch that operates two lights. I have bought a 1 gang 2 way flat plate dimmer switch that has three holes - one labelled with a wave and an arrow through it, the others L1 and L2. When I take off the old switch there are four wires, 2 red and 2 black. Could anyone help tell me which wires go to which holes please? Thanks in advance.
Dimmer Switch
- Thread starter hendo77
- Start date
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leave L2 unused, the other two are equivalent to a normal switch , and polarity is not important, but common convention is to make L1 the black/blue switched live.
Actually this is in the reference section, along with a lot of other good stuff...... I recommnd it.
Actually this is in the reference section, along with a lot of other good stuff...... I recommnd it.
B
breezer
one question.
since you have 2 reds and 2 blacks do i take it that that each of the existing lights are independant of the other?
if it is the the switch you have is of no use, you will want 2 gang 2 way
since you have 2 reds and 2 blacks do i take it that that each of the existing lights are independant of the other?
if it is the the switch you have is of no use, you will want 2 gang 2 way
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Opps, missed that 
With two of each there are a couple of possibilities
1) It could be loop through switch - were two blacks connected at the back of the back box and reds through the switch to take live to the lights - thats loop-through switch.
2) Or were they once two lights, now under the same switch - both blacks in the terminal L2, both reds at the terminal common. Was once a pair of switches, one for each light....
You need to know what came out. What was on the back of the old switch?
With two of each there are a couple of possibilities
1) It could be loop through switch - were two blacks connected at the back of the back box and reds through the switch to take live to the lights - thats loop-through switch.
2) Or were they once two lights, now under the same switch - both blacks in the terminal L2, both reds at the terminal common. Was once a pair of switches, one for each light....
You need to know what came out. What was on the back of the old switch?
How can you not know that?hendo77 said:
mapj1 said:Opps, missed that
With two of each there are a couple of possibilities
1)...
2)...
3) It's an intermediate.
Hendo - are these lights switchable from anywhere else?
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