I had 8 flush lights installed about 9 months they use to work now, I switch,I get nothing.I put a meter on one of the sockets.and it read I was getting power to it.When I touched the socket and metal at the same time with needle nose pliers, it sparks, and all 8 lights go on, can someone please tell me what the problem may be.The man that installed them cannot figure it out .
Thank very much,
David Ziccardi