3PDT in Voodoo Lab Bosstone pops

[robbert]

First of all, I've been visiting this forum for a long time. Always been helpfull and interesting.

Now. My problem

I am upgrading a Bosstone that had a DPDT switch and no LED. So, I've added that LED, a blue one.
Input, output, all ok. In that Bosstone there was a ring attached to the DPDT for grounding.
So I grounded the LED there, and positive is attached to the switch. I used a 10K for the blue LED. Now it pops. Not static, but like microphonic. If I wiggle the switch you can hear that true the amp. I am going nuts.
I've added a 100uF/50V at the adapter jack (just like the Everman Fuzz ).

Where does this pop come from. Have I used to much wire (solid core, 1mm thick), ideas ??  :wink: