How to wire a Treble cap "Shift" switch

[jdandry]

Looking to switch in a Pf cap across the treble cap in my tone stack ala Boogie's "shift". Any way to do it without a LDR and not pop when switched in and out? Thanks

 

[stratified]

Bridge the switch contacts with a 10 meg resistor.

Be aware that a mod like this can put high voltage on the switch. A mechanical failure could be really dangerous.