It doesn't matter which side you put the constant power or the points wire to, as long as they are connected to different screws. Also, if you drop and lose one of those screws, its a bastard finding replacement ones at the hardware store. they are usually slightly longer, and you wont think it makes a difference, until you have put a few hours into figuring out why its cutting out on two cylinders. They wont get tight enough without a washer under them.