Ok….. I cut all of the scanners apart, and looped the in’s and out’s. They each work fine by themselves. So I’ve rewired them all together, and now when I start them, the “pulse” starts a the 1st board from the left, and the 3rd board simultaneously. the pulse then run through the second board and stops. The 3rd board runs as if it was wired as a single board.I tried to insert a pic, but apparently I can’t. I am at a loss.