Right, the switch in one position gives you just the humbucker, and the switch in the other position gives you the humbucker followed by the resistor and capacitor.
Yes, I will work up a diagram for you and post it here.
Hi Bluemoon,
I'm trying to help the OP by creating a wiring diagram for him of that switch and its attached components, so he can add this switch functionality to his guitar.
The numbers on the capacitor are still not legible in the last photo you posted. Can you get your eyes close enough to the capacitor to read the numbers and note them down, then post it here? To help with that, you **could** temporarily unscrew and remove the nut holding this switch in place on the top side of the guitar so the wires soldered to this switch get some slack in the control cavity so you can lift the switch up closer to your eyes to make reading the numbers easier.
Also, can you confirm that the color of the 2nd and 4th bands on the resistor are Orange and not Yellow and not Gold? For a point of reference, i am treating the end of the resistor that has the Red band on it, as the starting side/left side/Bamd #1. Not the end that has the Brown band on it.