Working on a virtual pinball that has a quality coin door on it, but not a WMS or Happ one that I can tell. Tried a couple of the models on here, that frankly are better than this soliton if they fit your door. This one slides over the coin mech holder. The release for the hold has to be in the up position. I stole the bolt and nut from the actual coin switch and repurposed here... you can do the same or use new bolts. Had to use needle nosed pliers to hold on to the nut from the inside of bracket. Also had to drill through the 3D print and bracket to fit... if you haven't figured it out yet, this is a pretty ghetto solution, but, with a roller switch on it, it works sweet!