LED Lamp Steps 18-21
STEP 18 - Cover the entire switch body with silicone and seal the back of each LED with silicone. Carefully seal the switch hole in the side panel from the outside with a light coat of silicone making sure the switch can still operate.
STEP 19 - Connect the two solar cells in parallel by soldering the negative lead of one cell to the positive lead of the other cell and protecting with shrink tube. Tape the wires to the back of the cells or tack them with silicone. Attach the positive lead of the two cells to the diode lead and protect with shrink tube. Connect the negative lead of the two solar cells to the negative lead of the batteries and the LEDs and protect with shrink tube.
STEP 20 - Before cementing and sealing the top panel into place we need to test the circuit. Use the switch to turn on the LEDs and leave them on until the batteries are drained. When the batteries are almost drained the LEDs will dim at this point set the switch to the solar charging position and expose the solar cells to direct sun light for a few hours. If everything is working OK the batteries should now be at least partially recharged and the LEDs will shine at their regular brightness.
STEP 21 - Place a bead of silicone onto the top edge of the spacers on all four sides of the bottom assembly then carefully place the top frame with the solar cells into position. Gently and evenly press down on the edge of the top frame until seated. If the frame is not completely flat you can simply flip the whole assembly over and place some weight on it until the silicone cures.