Ah, guitar players, a fickle bunch. Everything has to be just perfect, until we decide it is not perfect. Lately, the rage just seems to be “true bypass this” and “true bypass” that. What does it all mean?
Guitarist usually use a effect in between their amp and their guitar. Now if I hooked my guitar directly to the amp, that would give me the guitar’s truest tone, your guitar cable being the only factor in altering the sound. (not taking into consideration your amp’s natural tone or your guitar’s) So back to the effects, if I place an effect pedal in between the guitar and the amp, the circuitry of the pedal may have a serious effect on the tone when not in use (When in use it’s supposed to affect the tone.) So, many manufactures have started using “true bypass” switches so that when the effect is switched off, it totally bypasses the circuits inside the pedals, therefore maintaining tonal integrity.
My Vox V847 Wah was not true bypass, so I decided to something about it. I hopped on Ebay and located a a Carling DPDT footswitch (true bypass) and ordered it. It arrived and soon it was installation time.
Here is what you need to begin:

From right to left:
A Phillips Head screwdriver
A Snickers Candybar (guitarist need help being satisfied,lol)
The Vox V847 Wah Pedal
The New DPDT footswitch
A 9/16 wrench (to loosen the footswitch)
Electrical Solder
A soldering iron
and just a bit of extra wire
First I took off the bottom of the wah pedal with the screwdriver, I eventually even removed the circuit board, it’s not like it’s difficult.

I then removed the original footswitch, just by placing the hot tip of the soldering iron against the post you can pull the wires off without snipping them.

In this picture, you can see the most notable difference being the DPDT switch has 6 post and the original SPDT switch has only 3 post.

Now all the wires are soldered in per the instructions (see below), I would have taken pictures of me actually soldering but it is hard enough to hold the wire, solder, and soldering iron without trying to add a camera into the mix.

Now I just cleaned up the wires a little, reinstalled the circuit board and the bottom was ready to go on.

After i put it all together, I put it back on the pedal board and played with it for about a half hour, and while it may sound a “hair” crisper, I think some people really go off the deep end over true bypass. I am sure it may come in handy, but it is not the end all be all off tone. Hendrix, early Clapton, Sabbath, Maiden, and all those bands that played back in the day didn’t even know what true bypass was, and the still rocked the hell out. In the end, I guess the only opinion that matters is your own.
**For those interested in the true bypass mod instructions, here are the instructions linked back to Fulltone’s website, don’t ask me why Fulltone has a mod for a Vox product on it’s site.

1) Unsolder wires to SPDT (stock switch), remove it, and Install new DPDT.
2) Cut Brown wire at “X” Mark where it meets PCB Quick Disconnect.
3) Re-route that Brown wire to DPDT Terminal #4 do not solder
4) Jumper a short wire from DPDT terminal #4 to DPDT terminal 3 and solder both.
5) Attach wire from Output Jack “Tip” to DPDT Terminal #5 and solder.
6) Run the Green wire (from PCB disconnect) to DPDT Terminal #2 and solder.
7) Attach wire from Wah Pot Terminal #3 to DPDT Terminal #6 and solder.
8) Attach a (ground) wire from wah pot terminal #1 to DPDT Terminal #1 and solder.
Congratulations….you’re done!