50s Recording King Lap Steel wiring

[vampwizzard]

Folks,

My buddy is overloaded with work and sent me a lap steel to fix. Pots were corroded and wouldnt rotate freely even after cleaning. Got pots and a cap, went to rewire it and Im confused as hell. This appears to be the original wiring. It appears the pickup is grounded to the mounting plate and only a hot wire is available. Does this wiring even work? Ive never seen running the tone cap between the volume pot and tone pot like they do here. Top pot is volume, white is hot out, black is ground out. Pickup meets cap lead on pin 1 of the volume. legs 2 and 3 of the tone pot (bottom) are soldered to the case of the pot.

[Keppy]

Seems fine to me. The tone pot is wired as a variable resistor to ground, controlling the amount of highs dumped to ground through the cap. For R-C in series, it doesn't matter which order they're in, so cap->pot->ground is equivalent to pot->cap->ground.

[vampwizzard]

It appears to be a variation on the 50s wiring scheme.. 60's wiring from this diagram.

[Willabe]

I think the 1st/top drawing is similar to the 'no load' tone pot wiring?

Wired that way the tone control pot doesn't load down the volume pot when you turn down the volume control. So you don't loose the highs when you turn down the volume control.

Gibson factory wired some guitars, not for long, that way.