Step 1: These Are the Things You Will Need.
3 feet (approximately) of red and black wires
5 ohm resistor or equivalent
heat shrink tube or electrical tape
small phillips screwdriver
Strip off the casing.
Peel back the shielding to expose the four wires of the USB cable.
Remove the shielding and cut off the green and white wires.
Solder the red and black wires to their corresponding color of the USB cable.
Heat the shrink tube over the bare wires or cover exposed wires with electrical tape.
Put a longer piece of shrink tube over both wires and the USB cable and shrink to fit or cover with electrical tape.
Solder the black wire to one side of the resistors.
Cover the connection with the heat shrink tube or electrical tape.
To find the negative side of the LED board turn the assembly over. Look at the battery holder and find the side that shows to install the negative side of the batteries. This is represented by a minus sign. Turn the board back over.
Unsolder the green wire from the board.
Solder the black wire to the board where the green wire was attached.
Solder the black wire to the other side of the resistors.
Cover any exposed wire or resistor leads with the heat shrink tube or electrical tape.
Attach the red wire to where the green wire was removed.
Now is a good time to see if the light works.
Plug in the USB connector to a powered on computer.
Press the on/off switch several times to test both sets of lights on the device
If the light does not come on it is possible you may have connected the wires to the wrong spots on the LED board.
Be careful to avoid the screw holes and accidental damage to the wires.
Then secure the LED board to the housing with two screws.
Squeeze a small amount of RTV into the hole around the wires. Allow to dry for several hours.
Step 15: You Did It!
Press the on/off switch to test both sets of lights on the device.
If you have an AC adapter with a USB port for charging a 5 volt device you can also use this to power your light.