I purchased 2 AFX Digital Lap counters for my 4 lane track . THE FOLLING STEPS ARE NOT NECESSARY, but for me it was easy to do.
My track is on a plywood sheet , so to prevent a slight "bump" in the sections of road connected to the lap counters, I first put the lap counters in position, traced around them , and then routed the footprint out
...Read MoreRead more about I purchased 2 AFX Digital Lap counters, so the lap counters' tracks were exactly the same height of the mating track sections. I then made a cutout so I can replace the batteries . Next I plugged in the supplied necessary cable for 4 lane operation . I followed the instructions on the back of the packaging, and everything worked exactly as advertised... Read LessRead less about I purchased 2 AFX Digital Lap counters