standard wiring for a 2 wire switch with LED

[CBD]

I have a box with the switch and jacks and wires but the board is gone.
I was thinking of wiring in my own effect PCB.
There are only 2 wires on the switch - green and black.
there is a brown wire from the LED and a yellow from the DC jack as well as a green from the input jack and a blue from the output jack
How would I use this to make sure my effect works and lights up the LED when the switch is pressed?

I have a picture but I do not know how to post it here

[CBD]

Picture attached
http://www.aronnelson.com/gallery/main.php/v/Schematics-etc/Empty+DOD+box+1.jpg.html

[senko]

I would remove everything from the box and start over. 

It would be a great learning experience to be able to decipher what actually was going on, but without a model number, you would just be wasting valuable time you could be spending on building. 

However, I'd like to give you some help. This page may shed some light on the wiring with a great diagram.  Use this as a reference:
http://www.beavisaudio.com/techpages/StompboxWiring/

Following stompbox common practices, I think the circuit was wired up so that if a plug were inserted into the DC jack, the 9V Battery would be disconnected from the circuit.
Also, the 9V battery's negative power lead (black of the twisted black/red pair) is connected to the Ring connection of the input jack's ring connection (left jack in the picture).  What this does is remove power from the circuit until a mono plug is inserted into the input jack.

The Green and Blue wires from the jacks appear to be the Input/Output connections to the PCB. 
The Brown wire may be the anode of the LED (where it would receive positive power).  The LEDs cathode appears to be connected to the input jack.  You can test this with a battery and a 1k resistor.
The Yellow wire may be where the circuit board received positive power
The Red wire is the 9V Battery's positive lead.

You might want to check this schematic out:
http://img186.imagevenue.com/img.php?image=99823_DOD_FX25_122_105lo.jpg

If the footswitch only has two connections, it is most likely a momentary SPST switch that toggles an electronic flip flop circuit formed by the 4007 IC.  More info on that here: http://www.geofex.com/article_folders/mill2extn/mil2plus.htm

But, yeah, I would just salvage all the salvageable components and build a completely new circuit into the box.  You'd learn a lot quicker doing it that way that trying to decipher this mess without knowing the basics.