Here are some pics and included instrucs from a counter I picked up at RS. It is self powered by a mini battery and has 2 "flying" leads - one blue, one black. I am to wire between a switching device (relay?). If you've been following the videocam project I need to hook it into the existing 4 stage setup to count the number of times the start stage is started. I can then view outside of the housing so I don't have to tear into it, rewind, and vcr play it to see if I had any hits. Look relatively simple although I can't figure it out.