Step 3: Hack your Cold Heat soldering iron (3 - Modify)
Next remove the positive terminal (no spring) from the LED, and connect the red wire directly to the LED. At this time, you can shorten all of the cables as much as you want for packing convenience. It is not necessary, but it is recommended.
Add a short length of wire to the LED terminal with the red wire to attach to the just removed positive terminal. You will also need to solder a wire from this same junction to the center tab on the CHSI tip holder (thick yellow wire in image).
Replace the center terminal wire from the switch with a longer wire, and attach this to the negative battery terminal (with spring). Cover all exposed metal with electrical tape, tape the white LED (near the tip) to the tip so the light shines through the hole in the case for the tip, and cover the circuit board with tape. Attach the red LED to the tape covered circuit board, and stuff everything into the case as shown below. You may need to tape or epoxy the switch in place depending on how your installation worked out. It is possible to use just tape and friction from the wires, but use adhesive if you are looking for a more permanent fix.
You are now done with the Cold Heat Soldering Iron hack.