fx on-off switch

[copachino]

i have a http://www.amazon.com/Roland-FS-5L-Metal-Footswitches/dp/B0002D01Q8/ref=pd_cp_MI_1 for my roland amp, but i want to know how they work, and if its possible to make one, maybe its a spst switch, but im not so sure how its wire to turn on and off the fx of my amp, any ideas??

[selfdestroyer]

This may help

http://www.instructables.com/id/Boss-FS-6-Clone-Build-your-own/

Cody

[jjanssen1]

I once went to a music shop and one of the staff there was using some alligator with a standard tip/sleeve guitar cable to find out what combinations worked to switch reverb on/off and to switch between the channels on an old fender amp I'm pretty sure it was. So if the combination is tip and sleeve momenterley to switch between reverb and non-reverb then you go and get a spst momentary switch to turn reverb on/off.
Hope this helps
Joshua