Welcome back, Tony. Sorry about the hole and all that. Hope that's all in the past. How it's hooked up depends on how those 3 terminals on your counter are labeled. I'm going to guess that they're marked +, - and "signal" or something like that?? And you're certain your sensor has only two leads, correct? If so, try this. (1) Twist the red wire from your battery pack and one of the wires from your sensor (should not matter which) and connect them to the + terminal on your counter. (2) Connect the black wire from the battery pack and connect it to the - terminal on the counter. (3) Connect the other lead from the sensor (again, it should not matter which color), and connect it to the "signal" or "pulse" or. . . terminal on the counter. This should work. If not, let us know, and I'll have Brainy talk you through it.