Sapphire Radio Potentiometer Connections?

[CoastalBug]

I'm doing a little bluetooth project using a Sapphire XV radio that I've gutted. I'm reusing the original volume/on/off switch as the main power switch. I believe only the back of the potentiometer is the on/off. If I'm correct the black wire at the bottom would be ground, the red would be 12v positive input, and the white would be the positive output to the rest of the internals. Is that correct? Anyone have any idea?

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Chris - 1968 Beetle Sedan, a book, and a lot of determination.

[sctbrd]

looks sound to me, looking at the wiring diagram. check with an ohmmeter from red to black and operate the switch.
the blue cap in your photo is C23 at the switch outlet:

[CoastalBug]

ok. I've got my ohm meter.

With the meter on continuity, and the switch off, I get a tone and 000 on the meter with black and red wires. I get .939 with black and white wires.

With the switch turned on, black and red give me .577, and black and white give me .940.

There's also a yellow wire on the back, but I can't seem to figure out exactly what that is.

Any of you electronics guys have any clue?
_________________
Chris - 1968 Beetle Sedan, a book, and a lot of determination.

[CoastalBug]

So now that I'm thinking about it. The white may be the incoming power from the battery, black would be the ground, and red would be the switched power going out to the BT board and incandescent light.

I think that is correct.
_________________
Chris - 1968 Beetle Sedan, a book, and a lot of determination.

[CoastalBug]

Disregard, I just answered my own question. If I turn the knob up with the switch on, I can increase and decrease the ohms which would signify volume power.
_________________
Chris - 1968 Beetle Sedan, a book, and a lot of determination.

[CoastalBug]

How would I keep the capacitor in the loop if I wanted to continue to use it? I was able to get my project up and running, but without the capacitor, I have to make sure the knob is all the way up so full power is delivered to the board. Any miniscule reduction turns the board off.
_________________
Chris - 1968 Beetle Sedan, a book, and a lot of determination.

[runamoc]