The brown wire comes from the input
socket, while the white wire goes to the output socket, and the blue wire comes from
the circuit’s output. For those of you who
have a Jim Dunlop Cry Baby wah, here’s a
pic of its switch.
The color code for a Cry Baby is as follows: The green wire comes from the input
socket, while the purple wire goes to the
output socket, and the two blue wires connect to the circuit’s output.
Okay, back to our Vox wah.
To remove the old footswitch and install
the true-bypass one:
1. Desolder all three wires.
2. Now look at the input socket.
See the two wires attached to the tip
tag—the brown and green ones? The
green wire is the audio-input lead for
the wah circuit. Clip it so that it’s no
longer connected to the tip tag.
3. Take a 3"- 4" spare piece of wire,
strip each end, twist the smaller wire
strands at each end together to create
a single, tightly formed lead, and tin
both ends with solder.