Bypassing Custom Rack Gear

[CrimsonQuandary]

I made a (very) large pedal a while ago that essentially takes two inputs and pans between them to a single output, with basic LFO controls.
I just recently rehoused it into a rack-mount case I found laying around, but I'm having some issues.
I wanted to find a way to bypass this effect with a stomp switch on my board, but without running my signal any further than it already is.
Is there any way I can have the switching done inside the enclosure with the rest of the circuit, but triggered with a momentary switch (or some kind of stomp switch) on my board?

I'm using a couple of boards and a power supply schematic that were all from www.musicfromouterspace.com, so the circuit is running about 12v+/-, if that makes any difference.
Any help would be great.
Thanks!

[haveyouseenhim]

Have you looked into a relay bypass system?

[Seljer]

Precisely that, get a DPDT relay. Use the switch as you normally would for bypassing. Hookup one end of the relay coil to your positive supply, use a footswitch to (dis)connect the other end to/from ground.

Indicator LEDs can run from the same switching that you're running the coil from.

[digi2t]

If you already have a MIDI foot controller implemented on your pedal board, get a relay board from Highly Liquid. I made my first A/B/Y rack unit with this board. Works beautifully.

[CrimsonQuandary]

Those are all great ideas. Thanks guys.
Seljer, I think I'm gonna go with yours and haveyouseenhim's idea.
I had already thought a little about relays but didn't really understand how to control them until your post.
One question though: are you saying I should use a momentary or standard on/off stomp switch to control the relay?
Also, is there anything I should know about relays when I'm picking one out?

Thanks again!

[defaced]

Also, is there anything I should know about relays when I'm picking one out?

The ones I see most often in signal paths are the Omron G5V-1 and G5V-2 (single pole and double pole, respectively).  I'm sure other small signal relays will work, but those are what I see/use the most. 

You should be aware of the need for a flyback diode on the relay coil. This is just a simple 1N4148/1N914 switching diode reverse biased in parallel with the coil. This provides a path for resolution of any flyback voltage created when the coil is de-energized.

One question though: are you saying I should use a momentary or standard on/off stomp switch to control the relay?

Depending on how you choose to implement this, you have many options between a latching relay, a latching switch, or a momentary switch with latching circuit.  The details of your project will push you in one direction or another.  Mainly, I look at where the power is coming from, where the signal wires are, how well filtered your relay power supply will be (excessive ripple from the power rail can be coupled to the signal), and how complicated I want the driving circuitry to be.  Based on these basic criteria, one method will generally look more favorable than the others.