Travelling guitar.

[Swanny]

I just make sure that there is a connection from the back of each pot to each other pot, and to the earth on the switch, and it's connected to the earth of the bridge. You just have to use your imagination to connect them all.

[jugglindan]

Just make sure you avoid creating a ground loop from overzealous grounding of everything. That creates more problems. This article from Fralin is a great read on the topic. The TL/DR summary is "Grounding is very simple: make sure everything is grounded, but only once."

DC

[Simon Barden]

The reality is that it's very hard indeed to create a ground loop of any significance within a guitar. Whilst it is electrically better to have no loop, the noise difference will be so small as to be undetectable to the ear.

You may create a 'one turn coil' as Fralin says, but that coil is connected to ground at both ends, it's not wired across the ground and signal outputs. Connect a pickup to ground at both ends (thousands of turns) and how much noise do you get? None. Just silence!

Ground?earth loops only become a real problem once there's enough current flowing so that you get potential differences at the various ground point connections. With your 2-pot, 1-pickup circuit, the differences in ground path are so small and the currents involved so minimal that you'd need the most delicate of measuring instruments to measure any difference in potential at all.

Plus if you shield your control cavity, you are blocking noise signals from getting in, so they can't be picked up by any loop.

So try and build your control circuit without a ground loop, but don't loose any sleep over it if there is one. It can easily be solved with one snip of the wire cutters anyway.

[DarkMark]

Instructions followed. Tap test is working with no hum.
Unfortunately only white wire left to run to the bridge, but meh.

[DarkMark]

Quick question, how do you joint the ground wire at the bridge end? As in, where, what and how does it make contact at the bridge?

[Simon Barden]

For a TOM bridge, ground wire poked into the post bushing hole before the bushing goes in. You need to drill a small hole into it from a suitable cavity.

You may need to show us some pics of what you've got, front and back, if you are unsure. We've only seen bits and pieces of your ideas so far.

[DarkMark]

Thanks Simon, That’s all I needed to know.
I think I’ve found a name for it, “The Travel-log”.

[Simon Barden]

Ha! Nice name.

[JohnH]

Ha ha, yeah, excellent name

[DarkMark]

Oh, the shame!
Once the neck was attached I found I got my bridge measurement out by a good 25mm. I don’t know how. I should stick with floating bridges. Anyhow, let’s fix that measurement.