Be sure you cut the speaker wire in a place that you can get the solder leads to it. Now solder the positive speaker wire you just cut coming from the circuit board to the middle pole of the toggle switch. I found that there is a residual voltage in the speaker circuit even when the alarm is not active, and this is enough to cause the diodes in the goggles to emit a small amount of light even when the circuit is not active. I tried resisters but I found that putting this red LED in the circuit worked the best to prevent this. For this reason this LED can be inside the clock box, just make sure it doesn't short against anything.
Most speaker cable has a way to identify one wire from the other.
Some have a white line on one wire, or one wire may be brass and other silver. It' s best to use the wire with the marking so that you know that it is the positive side. The length of the wire is to determine how far you want to be from the clock when you're sleeping. 6ft should be plenty. Be sure you make this jumper wire the right length so that the two LEDs are spaced the proper distance apart to fit in the goggles.