@taterjoy Here is a schematic showing the 3 parts with a parts list. You will need to solder the connections and cover them with heat shrink tubing or electrical tape. There is no danger of shock at 6 Volts. The LED and resistor may get slightly warm or not. Just keep checking it to be sure you don't burn your skin. Mine runs cold using a 10 Ohm resistor. A 5 Ohm may create more heat. To use it just place it against your skin in the targeted area and run for 10 minutes. Then move to another area if wanted. So far I have seen no change but I just started using it once every 2 or 3 days. The photo shows how mine looks. The resistor is in black heat shrink tubing so you can't see it.