Volume/Volume diagram with CTS single pole push/pull splitting the wide range humbucker when 'up'. The volumes are linked like an LP, so in the middle position zeroing either pickup's volume will mute all sound. The wire colours should be correct for your pickups.

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If you decide you need the cap + resistor combo to cut back some brightness/icepicky-ness, it just needs to be connected between the out from the switch and ground (and insulated so it can't short with anything). Something like this:

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Note: If your CTS push/pull has a plastic back like above then you need to make sure the metal body is grounded either via the control plate or with a solder link on the side like I've drawn it.

Let me know if you need anything else.