MY GROUND HUM BRAIN TEASER

[john eagle]

As mentioned in another thread I have a a ground hum that's above my pay grade. This started as a result of gutting the wiring of a standard LP 2 x vol./2 x tone configuration. This is only my 3rd experience building a wiring harness and my 1st time building a LP harness. As a result I am rather green when it comes to troubleshooting. Before I break down the results of the continuity tests I will share that I resoldered the grounds of the switch and jack but to no avail. Without further ado here are the results of the continuity tests.
BRIDGE TO :
POTS - ️
GROUND SOLDERS ON POTS :️
JACK :️
SWITCH :️
BRIDGE PU. :️
NECK PU.:️
SHIELDING :️

SWITCH TO :
POTS:️
JACK:️

POTS TO POTS :️

So as you can see it's rather a mess and I'm not sure where to begin. My common sense mechanism seems to have failed me. Why, for instance, would it be cold solders on the pot grounds when the multimeter alerts there is continuity? And why do I have continuity between the jack and the switch but not the bridge? Then there's the neck pickup!
I'm this close to taking it to a guitar tech. Talk me off the ledge !

 

[Equalphone]

Can we see some close up photos from a few angles?

 

[john eagle]

I don't know ow to do that. Don't I need to upload the pics to some cloud first?

 

[soulman969]

I don't know ow to do that. Don't I need to upload the pics to some cloud first?

No, you can upload them directly but what I find easiest myself is to save the image to my lap top so I can resize it if necessary. Then our system will allow you to simply upload it from there.

Here's an example of one of mine I've uploaded. Use the icon in the task bar above that says "Insert Image". You can either drop the image or hit "click here", go to the computer file where you store your photos, then select those you want to upload. If you get a prompt saying the image it to large you can reduce the size. There's an entire thread on methods for doing it.

 

[john eagle]

Thanks, I'll try that first chance.