Korg Poly800/EX800 Users

Hi Poly-Family,

I've seen some of the members have their program write switch put on
top of their Poly 800's panell. I want to do that mod too because it's
so much easier than having to reach around the back of the Poly. 
Can anybody tell me where to solder the switch for this? What kind of
switch do I need?

I tried a 3 pin switch and soldered it this way:

oooooo
ooo++o

But this didn't do anything. Do I need a 6 pin switch instead?

Thanks for your help,
Flo