I just wired up my ST-1 build, plugged in and... nothing.
My ST-1 kit came with three wires to solder in: all of them attached to the volume (not two attached to the tone as per the PitBull wiring diagram - see attached image#1).
The wire attached to the lug is yellow, and the two wires attached to the top of the volume are both black.
Following the wiring diagram (and various YouTube videos), I see that the yellow wire is the "'hot' wire to tip" and the two back wires are both earths. Accordingly, I wired the yellow "hot" wire to the tip on the input and one of the black wires to the earth lug (see attached image #2).
In accordance with this advice (see attached image #3)
Then I soldered the other black wire to the bridge.
I double checked the wiring. I re-soldered the wires to check there was a good contact. Every time I opened up the jack cavity the wires were still attached.
I'm out of ideas. Any help appreciated
Martin