Auto capacitor? How about these?

Pyle PLCPBT10 10 Farad/22AH Car Battery Style Capacitor

10 FARAD/22AH Car Battery Style Capacitor with Auto On/Off Switch Control. Works with all... More

MA Audio Car Capacitor, 15 Farad => Model SYC15Q

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Legacy LCA280SL 2.8 Farad Digital Power Capacitor

Features 2.8 Farad Digital Power Capacitor, Extreme Low E.S.R, Auto On/Off Four Digit... More

CA-300X 3 Farad Digital Capacitor

Car Capacitor (ca300x) Features : Car audio amplifiers need huge amount of current and... More

Kole Audio C1.6R

Digital power capacitor with auto control turn on/off circuitry • 1.6 Farad •... More

Kole Audio C8D

Digital power capacitor with auto control turn on/off circuitry • 8.0 Farad Capacity... More

Kole Audio C6D

Digital power capacitor with auto control turn on/off circuitry • 6.0 Farad Capacity... More

Starvision CAP-20 Farrad Capacitor

20 Farrad Capacitor, Extreme Low E.S.R: Less than 0.0018 ohm, Auto on/off 4 digit display... More

Power Acoustik PCX-20F 20 farad Capacitor

24V DC  More

Rockford Fosgate RFC1 Capacitor

1.0 Farad, 16V to 20V  More

Capacitors TKO Audio BH-CAP18

1.0 Farad Digital Capacitor More

Rockford Fosgate CPCD10-03 Capacitor

1.0 Farad Storage, 16 Volt, 1000 Watts RMS  More

Monster Cable MPC-P300-DCAP-1F 1 Farad Stiffening Capacitor

22 Volt  More

Power Acoustik PCX-30F 30 Farad Capacitor

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Rockford Fosgate 8-Gauge Capacitor Add-On Kit

Complete your car audio installation with this capacitor add-on kit for satisfying sound. More

MD 5.0 Farad Digital Capacitor

Take your car audio system to a whole new level with the MD 5.0 Farad Digital Capacitor... More

ACAP7P 1-Farad Digital Capacitor

Features: 1 Farad Digital Capacitor Distribution Block Terminals 24 Volt Rated - 30 Volt... More

C12HD 12-Farad Capacitor