well if you use only the red this will send a switched live up to the light dump the black.
at this light mains in and mains out with the red in the switched live terminal, simple.
at the second light, switch wire connected to C & L1 from the perm live terminal and switched live terminal of the light, then a link of cable from C to C on two gang switch. strappers connected L1 & L2 both switches one core used from single switch term C up to that light. cant explain it any simpler if this is how the lights are wired i.e. loop in
at this light mains in and mains out with the red in the switched live terminal, simple.
at the second light, switch wire connected to C & L1 from the perm live terminal and switched live terminal of the light, then a link of cable from C to C on two gang switch. strappers connected L1 & L2 both switches one core used from single switch term C up to that light. cant explain it any simpler if this is how the lights are wired i.e. loop in

