Jaguar: Both Pickups Off = Hum

[Silence Kid]

I rewired my MIJ Jaguar long ago, and don't know if it just started doing this or it was always like this... But is it normal to experience hum (like, ungrounded guitar noise) when both pickups are off? Any pickup and knob combination does not have the hum, except the "kill" position. At a glance my schematic matches this:

Would "both off" actually generate ground hum with this schematic? Or is there anything specific I should look for or a fix for this? All my brass shielding is grounded, plates, pots are grounded etc...

EDIT: So I got a bit practical, hooked a multimeter to the jack tip and checked for continuity to ground. With both pickups switched off, there is no continuity. But per the schematic... Should there even be? Unless I'm reading it incorrectly, I think no? Both pickups switched to the "off" position doesn't ever loop back to ground, it seems. I can kill the hum by turning the volume all the way down with both pickups off if that matters, I guess that tells me my pot is grounded.

 

[DavidRavenMoon]

Re: Jaguar: Both Pickups Off = Hum

If you want to mute the output, you need to tie that to ground. You can’t leave it floating. On most guitars you can’t switch off both pickups.




Sent from my iPhone using Tapatalk

 

[Silence Kid]

Re: Jaguar: Both Pickups Off = Hum

If you want to mute the output, you need to tie that to ground. You can’t leave it floating. On most guitars you can’t switch off both pickups.

Sent from my iPhone using Tapatalk

I gave this a shot, but keep feeling like it will mess with selecting a single pickup... Will these corrections do it?

 

[Silence Kid]

Re: Jaguar: Both Pickups Off = Hum

No harm in me rigging it up with alligator clips first... Still weird the original design didn't account for this.