The Bio-Battery - Power for the future. (So easy a 10 year old can do it.)

Step 9 Soldering the switch wires.

1. Now that the switch and light holder have been installed it is time to solder the Positive and Negative wires. Predetermine which side of the monetary switch is gong to be positive and which will be negative.

'**Safety Note*** Once again use eye protection.

Using your resin core solder and your soldering gun position your material to be soldered into a clean work area. (As you may have noticed it is not on the kitchen table, but now is on the kitchen counter. Still not the best choice of locations to solder. Perhaps using some type of place mat would help prevent any burns to your counter; luckily we did not have any burns.

2. With safety glasses in place heat the soldering gun element and melt a little solder to your soldering tip. **Safety Note***be careful not to burn yourself.

3. Next place Red Positive wire on the terminal of the switch, make sure your soldering gun is hot and then rub some of the solder on to both the wire and the terminal making them stick together.

4. Once complete with the Red/Positive wire do the same thing with a short piece of the black wire. Make sure it is long enough to reach the positive terminal of the LED. If you need more solder just do as before and add some solder to the soldering gun tip.
**Info Note** The positive side of the LED is the longer leg coming out of the LED itself.

5. Now solder the short black wire from the switch to the Positive leg/side of the LED.

6. Finally solder a longer piece of the Black/Negative wire to the other LED leg/side.

7. Let all solder cool to the touch.

See all of the pictures below for examples.