Dual True Bypassing?

[Higgie]

I've been using this thread as a guide for wiring a Pedal with Dual true bypasses.

The reason I want to do it though is for Modifying a Danelectro French Toast. I'm basically re-housing it, and true bypassing it. But instead of the small flip switch to turn on the octave effect, I want to put another foot switch on it. So it will have a foot switch to turn on the fuzz (with LED) and a footswitch to turn on the octave (with LED).

For those unfamiliar with the pedal, the fuzz has to be on to activate the octave. Now, will I need a second 3PDT switch for the octave? I'm assuming so because I want an LED to indicate when the Octave is on or not.

Also I would like to know how I am to wire the switch(es) for the desired effect.

Any help in this matter would be greatly appreciated.

Thanks in Advance.

[ninoman123]

Well what kind of switch was the original? If it was an SPST or SPDT you could use a DPDT, but if the original switch was DPDT you would need a 3PDT. I would need a schematic and then I could tell you for sure.  But one half of your switch will be switching on octave one half will be switching on the LED. If someone has a schematic post it.

[Higgie]

Well I'm told the pedal I'm modding is a clone of the foxx tone machine. So here's a schematic.

Thanks for the quick reply.

By the way, The original switch was just a toggle switch.

[ninoman123]

Alright that schematic shows it as a SPDT but one of the throws isnt connected so heeeeeeeeeresssss what you wanna do. Buy a DPDT. You can use a 3PDT but its a waste of a set of throws and a pull. So go with DPDT. Connect one side of the DPDT the way the oringial toggle switch was wired, and then the other half of the DPDT will go to the LED. Connect the + side of the LED to the middle lug and connect a 4.7k or so resistor to the other lug of the DPDT then connect that other half of the resistor to power. Here is a drawing



You could make this a footswitch...toggle...momentary footswitch...anything youw want =)
The 4.7k resistor limits how much power goes to the LED. You can reduce it or increase it to adjust the brightness.

This should work...could someone confirm it for me?

[Higgie]

Thank you so much. That diagram is exactly what I needed.

Could you give me a diagram on how to wire the 3PDT switch if it's not too much trouble? :oops: Its my first project...

[ninoman123]

It would be the same exact thing expect that one of the columns wont be used.

[Higgie]

Oh cool. Thanks man.