Covert 2 Way Dual Gang to 2 Way Single Gang Light

This is liable to be a right mess now with crossed switch drops and crossed and interconnected strappers.

Assuming at each switch, you have a cable with Red and Black and two cables with Red, Blue and Yellow

do this at BOTH switches.

L1 - 3 Reds
L2 - Black & 2 Blues
Com - 2 Yellows
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My thought is that on one of the switch drops you've got the permanent and switched lives the wrong way round.
Or you had 2-core strappers, with permanent live into COM at one and switched live out of COM at the other, but the permanent lives for each light were at different ends.

I think we may be reaching the old Plan A & Plan B situation...

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