Add resistor to Mooer Wahter wah pedal for Fuzz

[Jarninho]

Hello,

I am looking to install a 22k resistor in my Mooer Wahter pedal. This to make my Fuzz work. It's a heck of a lot easier to install it in my Fuzz, but I don't want to I Hopefully you can help me out. I am a mechanical engineer, I can make some sense of handwires stuff, but this is too much. It's definitely an interesting pedal. To my surprise it doesn't have a pot, but I am not sure what it uses to find the pedal position. The pedal is activated by just standing on it. The black pads are actually pressure sensitive switches. It's actually an awesome pedal, sounds really good and since you can just stamp on it in any position to activate it you can create some cool effects.

The pedal is true bypass, I want to install the resistor in such a way that the pedal stays true bypass, so the resistor needs to come at the end of the wah circuit. I have no idea where to install it. I have basic tools and a bit of soldering skills.

This is the pedal:

This is what you get after removing the bottom of the enclosure:

Here the first print is removed and flipped over, and the 2nd print is visible. You can also see a white sticker in the enclosure. That is linked to the pedal and moves. Somehow that must be involved in registering the pedal's position. Also visible are the 'wires' going to the pressure pads. I think the 2nd print is mainly for the pressure pads system, but not sure:

More details of the 1st print:

2nd print details:

And the empty pedal:

I hope someone can point me in the right direction. I have a multimeter so can do some measurements.
Thanks in advance.

 

[gonzo]

Are you trying to change the output impedance to work with the fuzz? True bypassing that pedal will not be easy, if not impossible.

 

[Jarninho]

The pedal itself is true bypass. My pedalboard now is in this order: Guitar -> Fuzz -> Wah -> OD etc. When I'm not using the wah, there is no problem. All works well and it's the same Fuzz sound as when I take away the Wah. But I can't use the Wah with Fuzz. It does nothing when the fuzz is engaged, as you probably know.

I have one of those 'volume boxes', which is just a potmeter and two female jack connectors. I put that in between the Wah en Fuzz. From approx 20k resistance the wah works well with the fuzz. However that is an 'always on' solution. I'd like the resistor not to be there if I'm not using the wah.

So I just need to know where to place a 22k resistor in the wah circuit, and not accidentally in the true bypass circuit. However when I opened up the fuzz I was like; help!
Hope this makes sense.

My plan for now is to just take my multimeter, connect one end to the output connection of the pedal and just place the other end to various points on the print of the wah until I find a point of zero resistance when the pedal is engaged, but has infite resisstance when the pedal is in true bypass mode. But I hope someone has a more clever idea of where to look.