Installing an on/off LED in a Boss BF-1

[Gil]

I have a great sounding BF-1 flanger which doesn't have any LED indicator installed in it...
I wonder what would be the best way to install a LED. Should I use a 3PDT ?

[Mark Hammer]

I tend not to bring mine to work, and none of the pics I can access at te moment seems to be clear enough.  But I have a vague recollection that actually only one set of contacts in the switch is actually in use.  Maybe you can even install a status LED without having to change the switch at all.  Check first, though.

[Gil]

Thanks,

any other suggestions ?