Been doing a lot of evening and night hunts because it's so hot. The light switch is connected to the machine power switch so it only works when the machine is on. I tried several different configurations of the LED's. From reflecting mirrors, one LED, 2 LED's, acrylic light bars.... you name it. None worked better that this configuration. Still some glue in there from my attempts. You will need to buy 3mm/.125 diameter LED's, sub mini switch and toggle seal (not shown in the picture) . So under $15 worth of parts and about 2 hours. You need either green, blue or red LED's for night use. Don't use white or it will mess with your eyes. Also I already posted some time back that I cranked my internal threshold up so there is a slight hum. I was going to panel mount the threshold pot for adjustment but the threshold holds very steady without it. So there you have it - an M6 with threshold and lighted display hence the M6pro model. If I was smart enough to add ground grab I would.:cheers: