That's a very good point but I'd tried everything else and thought that...well never mind!
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With blacks wound together and live looped to ~ I get on elight on but won't dim when red connected to L2; other lights won't work in L2 or L1 in respective dimmers but each...
old markings were top: common, L1, L2, common. Bottom: L1, L2, common, L1, L2
New has three dimmer modules each with: ~, L2, L1 plus an earth on the faceplate
I am trying to replace a 3 gang lighting swirch with a 3 gang dimmer. The old wiring had 5 black wires wound together and thr switches wired up only with red wires; taking this over to the dimmer is proving problematical! I have tried most combinations but no joy; Presume the common red goes to...