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Installation tools are needed for installing car audio speakers, amplifiers, subwoofers, and aftermarket source units. In this tool section I will show you my favorites. For each tool I will list a budget version, and a professional version.
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12 Volt 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI 12 Volt 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI ScyTek

The PEI ( By ScyTek Security ) 40 Amp 5 Pin relay is a low cost 12 Volt relay.

Big Jeff Price: $6.95
Automotive Power Door Lock Actuator For Keyless Entry 12 Volt Linear Automotive Power Door Lock Actuator For Keyless Entry 12 Volt Linear

Universal Power Door Lock Actuator Car Kit 12 Volt Linear Motor Heavy Duty New

Big Jeff Price: $7.95
5Pcs 12V 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI 5 Pcs12 Volt 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI ScyTek

5 Pack Deal The PEI ( By ScyTek Security ) 40 Amp 5 Pin relay is a low cost 12 Volt relay.

Big Jeff Price: $9.95
DS18 FHSAGU 80A AGU Glass Inline Fuse Holder With 80 Amp 4 Ga or 8 Ga DS18 FHSAGU 80A AGU Glass Inline Fuse Holder With 80 Amp 4 Ga or 8 Ga

Quantity: 1 Waterproof AGU Fuse Holder 1 80 amo Fuse

Big Jeff Price: $11.54
10 Pcs 12V 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI 10 Pcs12 Volt 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI ScyTek

10 Pack Deal The PEI ( By ScyTek Security ) 40 Amp 5 Pin relay is a low cost 12 Volt relay.

Big Jeff Price: $15.95
DS18 ANL Fuse Holder w/250 amp Fuse Waterproof FHRANL250A DS18 ANL Fuse Holder w/250 amp Fuse Waterproof FHRANL250A

ANL Fuse Holder. 0/4GA In, 0/4GA Out. Includes 200 Amp ANL Fuse

Big Jeff Price: $15.95
200pcs MALE+FEMALE METRA INSULATED QUICK DISCONNECT TERMINAL NYLON Blue 16-14AWG 200pcs male+female insulated quick disconnect terminals blue 16-14 AWG

100 pcs Blue Male Disconnect Nylon 14-16 1/4" gauge +100 pcs Blue Female Disconnect Nylon 14-16 1/4" gauge 200 Total

Big Jeff Price: $17.95
DS18 FHSANL1014DIG ANL Fuse Holder 0/4GA In - 0/4GA Out with Built in Voltmeter DS18 FHSANL1014DIG ANL Fuse Holder 0/4GA In - 0/4GA Out with Built in Voltmeter

ANL Fuse Holder. 0/4GA In, 0/4GA Out. Built in Volt Meter.

Big Jeff Price: $28.95
DS18 Dual 1/0 Gauge to 0 Gauge Input Adapter Pin with Offset Amplifier Install DS18 Dual 1/0 Gauge to 0 Gauge Input Adapter Pin with Offset Amplifier Install

DS18 DPIV1/0 Pair of Dual 1/0 Gauge to 1/0 Gauge Amp Input Reducers with Offset Stub

Big Jeff Price: $29.44
50 Pcs 12V 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI 50 Pcs12 Volt 5 Pin SPDT 30/40 Amp Gold Relay Sealed Automotive Car Truck Bike PEI ScyTek

50 Pack Deal The PEI ( By ScyTek Security ) 40 Amp 5 Pin relay is a low cost 12 Volt relay.

Big Jeff Price: $41.95