AUX input jack for 67-72 AM radio

[69-72]

Originally Posted by chuck69ss

Couple of thoughts:
1. A cap soldered to the case sounds like a tone control, rather than volume. These are stacked pots, right?
2. The easiest way to figure this out is with an oscilloscope. I have also used a set of headphones with one side tied to gnd and uses the signal lead to poke around and follow the signal path. You want to find the input side of the volume control.
3. I wish that had an AM/FM to figure this out. :-)

Maybe someone else has figured this out.

Thanks for the insight. Not quite sure what the significance stacked pots have but it does look like there is two of them kind of. I will try the headphone idea and report back.