OLP Stingray. Help needed

3 knobs. Bottom two are volume and tone. 1 pickup. The top knob…
It doesnt seem to do anything.
Bottom pot seems to be a push/pull type, if so how to engage the preamp? Pull? Twist?

If it is active, i dont see a place to put a battery.

One pickup

If it is active, where to put the battery, and how to switch from active/passive? I got it for free and i **really*** love the sound of it. Gonna get an actual ernie ball within the year. But anyway. Its older and im…

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