My pal Dan asked if I could convert his 2006 era J 611 to 4 chuffs. I thought it would be a great opportunity to try out one of GRJ's Chuff Generators along with one of his miniaturized 5VDC power supplies that he was kind enough to sell me. The installation was pretty straightforward along with the chuff calibration process. The instructions were very clear and helpful. This setup wasn't much more effort than setting up a reed switch with magnets. Here's a few quick workbench shots and a quick vid.