I think this game works really well as concept. it took me a while to understand how the game works and what to-do. you can even add some penalty if you pick the wrong wire to give the player some extra stress. maybe with life's or chances.
I orriginally had it take 1 second off the timer, but when I got around to doing the music, I worked out the music in a way that synced up with the time left and had sound queues/ramps in it in time with the remaining time. So I switched it for just locking input for the duration of the red flash (~1/4 second).