Lifesaver mod

Now as I am still waiting for the parts and guitar to arrive I've done some extra planning here.
I decided to do "lifesaver" mod, where in possible electrical failure current running through guitarist as low as possible.

Here is the picture of it. It is done by guitar guru Fox and here is link to this thread (in Finnish).

I found it also from Metroamp.com forum.

The circuit consists of 1nf min. 500v cap and a 220k preferably 1w resistor in parallel.

I think I have these parts lying somewhere around.