hi there my first post,want to put 2 lights in the garden i already have power from my garage to a wheatherproof double gang ,could i take power from this to run the lights? and also would like to know how to wire up 1gang 2way switch to light to other light to 1gang 2way switch so i can switch lights on either end of garden . sorry if it sounds long winded,would appreiciated your replys