... Next decision will be the switches and where to place them. I've added yellow circles to represent the switch positions. They have to go to the side of the crossovers unless they take the place of the centre led. Is there a 'normal' way of doing this? In the Dean Park video, he numbered each one and then had a line of switches below, but to me that brings into another step in the process, when having to look up a number, remember it and then throw the corresponding switch. 479_190924_010000000.jpg posted: 19 Jun 2020 14:59 from: Martin Wynne Gordon S wrote: that horizontal and vertical were 'reversed'. Don't take that literally, as I'm sure there's a reason for it, in the same way landscape and portrait appear in print commands. Hi Gordon, They aren't reversed. Horizontal means they move horizontally into alignment with the others above and below. Vertical means they move vertically into alignment with the others at each side. However, I agree the wording isn't too clear, I will try changing ...