Hi all - I am building a firepit and seating area in my backyard. The firepit will be surrounded by a dry stack stone retaining wall that I just started building. Before I any further, I thought it might be a good idea to lay wire into the wall for future installation of low voltage lights. Any suggestions? Should I just get some low voltage wire and run it through the middle of the wall, and then run some tails out to the inside of the wall every few feet? Or just build it wall and run it in front/behind the wall later on?