So I’m abit rusty on lightswitch connections baring in mind it’s not 3 plating so here goes ... , a 1 gang powering 1 half of kitchen down lights and then a 2 gang 2 way powering an outside light and then another half of the kitchen downlights , I want to change it so that the switches are 2 wayed and all the downlights are switched together and keep the outside light on the other end switch , so if I take out one of the switch wires and then put a 3 core from each switch to each other , how do the connections go ? Is it the common with a link in and then black brown L1-L2 and the same the other end ?