Here's a quick tutorial explaining how to connect a Bass Pump system.
Prerequisite: an amplifier with a subwoofer RCA output.
Here's everything I bought:
5M RCA cable:
https://amzn.to/2y5iPtF
Car-style amplifier:
https://amzn.to/2RwrOfm
Bass Pump speaker (without cone):
https://amzn.to/2OMzzzu
RCA splitter to connect to a subwoofer amplifier output:
https://amzn.to/2pHdZ16
Cable to connect the speakers to the mini amplifier:
https://amzn.to/2OH9WzJ