I just got a maxon ad80 reissue with a missing foot switch. It looks like a spdt switch as there are 3 floating wires, one blue, one pink, one black (ground?) I'm unfamiliar with their switching but I'm thinking maybe the black goes to the middle lug and the other two on the outsides? The blue comes from pad 13 right next to where you can see it. The pink is going somewhere on the daughter board that the pots are mounted to.
(http://i1101.photobucket.com/albums/g429/Mandoluke/EE74F447-2ADB-4AF2-8B8A-0E877972BD64_zpszzsolfzf.jpg)
This is the same model
(http://effectsfreak.com/media/product_photo/5e42989b58aba091a68af69176691aba.png)