12-24V Car SUBWOOFER 12V 20A Toggle Rocker Switch Blue LED Light 5Pin ON OFF - AliExpress
Wiring Subwoofers Correctly
Amazon.com: JBL Club WS1000 10" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics