How can I add an LED to Prescritpion Experience swell section

[rousejeremy]

I love the way the LED swells with the effect here.
http://www.youtube.com/watch?v=mafRzy36o0M
How can I add this to mine?

[rousejeremy]

I just got off the phone with Prescription, and the person (who was a really nice guy btw, and was surprised I knew the pedal had the Anthony Leo fuzz in there) I was talking to said that the pedal with the LED was made by ADA for a short period of time and that the LED itself was in the circuit. They have since changed the layout because there had been many problems with the switches.

I was up late last night touching the LED all over the place in the circuit, on the switches, on the jacks and couldn't get it to swell with the effect.

P.S sorry for the incorrect spelling in the title