I'm trying to find a simple and easy design for a project my friend decided to build and now needs help with (of course!). He has built a 6 foot light house at a local hang out and needs a simple flashing light circuit. We are trying to create a circuit that would flash on 4 seconds off 2 etc. He has it wired for 120VAC with all the bells and whistle for the light house, with the exception of the light. He left that part to me. I'm new to creating circuits and seek some expert advice....all info is greatly appreciated!! Thanks