I have a used Bennington 24slx. The previous owner said they had things started for a livewell, but didn’t put it in

[SSSMinnow]

There is a black box under the seat next to the seat that would have had the well installed. What is the black box for?

 

[SEMPERFI8387]

There is a black box under the seat next to the seat that would have had the well installed. What is the black box for?

Battery?

 

[myv10]

any pics? I've had livewells on benningtons for 20 years.

 

[SSSMinnow]

Ran wires. It’s a subwoofer.