I
Ihavenoclue
Hi all, totally newbie to this, is installed a porch light outside and it was already wired to behid a switch, after taking the switch off the wall, there are free holes named L1,2 and 4. To make this more complicated there are 2 wires brown and blue, and three wires all blue grouped together which are free. And all earths are grounded. So which group of wires do I connect into my 3 available holes to get my light to work???