Step 5: Soldering on the electrical wire
This step is where the heatsink is really useful! The heatsink that I am using (AMD stock heatsink) has a gap in the middle that is perfect for soldering. Wedge the EL wire in one side and the electrical wire in the other so that the EL wire core lines up with the shorter wire.
Solder them together and flip it over to solder the other wire.