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1957 Harley Davidson FL

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 1957 Harley Davidson FL

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Limitless Lithium LL3.5A-MTN-HV

3.5A 15V Portable Automatic Smart Lithium High Voltage Maintainer

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3.5A 15V Portable Automatic Smart Lithium High Voltage Maintainer

• Portable Automatic Smart Lithium High Voltage Maintainer
• Lithium LTO Battery Maintainer 3.5 Amp
• Designed for charging 15 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all LTO and high voltage lithium batteries

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$89.00

In stock

Only 1 Left!

• Portable Automatic Smart Lithium High Voltage Maintainer
• Lithium LTO Battery Maintainer 3.5 Amp
• Designed for charging 15 volts batteries
• Shuts off when the battery is charged
• Can be used as a "Maintainer" for all LTO and high voltage lithium batteries

NVX VPRO35TW

240W Peak (120W RMS) 3.5" V-Series Pro Audio Super Slim Bullet Tweeters

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240W Peak (120W RMS) 3.5" V-Series Pro Audio Super Slim Bullet Tweeters

• 3.5" Pro Audio Bullet Tweeters
• 240 watts Peak Each
• 120 watts RMS Each
• 4 ohm Impedance

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1
List price $47.99
-38% $29.99

In stock

Used from: $17.99

Omega DS-2.4

Economy Door Lock Actuator

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Economy Door Lock Actuator

• Single Door Lock Actuator
• Converts Manual Doorlocks Into Power Doorlocks
• Two-Wire Reverse Polarity Operation
• Universal Mounting Hardware Included

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List price $19.99
-40% $11.99

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• Single Door Lock Actuator
• Converts Manual Doorlocks Into Power Doorlocks
• Two-Wire Reverse Polarity Operation
• Universal Mounting Hardware Included

Rockford Fosgate PP4-X

250W Peak (125W RMS) 4-Ohm Passive Crossover

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250W Peak (125W RMS) 4-Ohm Passive Crossover

• Passive Crossover
• 250W Max and 125W RMS
• Dual Woofer Outputs
• Includes Mounting Hardware
• Designed for Punch Pro Midrange Drivers and Tweeters

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$99.99

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• Passive Crossover
• 250W Max and 125W RMS
• Dual Woofer Outputs
• Includes Mounting Hardware
• Designed for Punch Pro Midrange Drivers and Tweeters

NVX SDBSK2 Premium Stealth Black

91 mil 1.38 sq ft Car Speaker Sound Deadening Kit (Two 10" x 10" Sheets)

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91 mil 1.38 sq ft Car Speaker Sound Deadening Kit (Two 10" x 10" Sheets)

• 1.38 square feet sound deadening kit
• Solid black design for any stealth car audio installation
• Material Used: Vibration Dampener
• Material Thickness: 0.091
• Install Location: Speaker
• Pack includes two 10" x 10" sheets

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47
List price $18.74
-20% $14.99

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• 1.38 square feet sound deadening kit
• Solid black design for any stealth car audio installation
• Material Used: Vibration Dampener
• Material Thickness: 0.091
• Install Location: Speaker
• Pack includes two 10" x 10" sheets

PAC BB-1PR

Pair of Bass Blocker / Passive Crossover; Removes 0-300Hz at 4 ohms, 0-150Hz at 8 ohms (BB1PR)

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Pair of Bass Blocker / Passive Crossover; Removes 0-300Hz at 4 ohms, 0-150Hz at 8 ohms (BB1PR)

&bull Pair of Bass Blockers for 6" x 9" Speakers
• Blocks 0-300Hz @ 4 Ohm
• Blocks 0-150Hz @ 8 Ohm
• Filters Out Unwanted Frequencies Towards Speakers

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13
List price $29.00
-45% $15.99

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&bull Pair of Bass Blockers for 6" x 9" Speakers
• Blocks 0-300Hz @ 4 Ohm
• Blocks 0-150Hz @ 8 Ohm
• Filters Out Unwanted Frequencies Towards Speakers

Metra 82-6900

1.5" Spacer Ring for 6x9" Speakers

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1.5" Spacer Ring for 6x9" Speakers

• 6" x 9" Universal Speaker Spacers / Depth Extenders
• Adds 1-1/2" depth to speakers
• Items that make the installer's Life easier
• Trimrings and Trimplates
• Speaker Grills
• Speaker Adapter plates

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18
List price $21.99
-50% $10.99

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• 6" x 9" Universal Speaker Spacers / Depth Extenders
• Adds 1-1/2" depth to speakers
• Items that make the installer's Life easier
• Trimrings and Trimplates
• Speaker Grills
• Speaker Adapter plates

Belva BRT038

0/1 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

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0/1 Gauge Ring Terminals, 3/8" Opening with Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

• Ring Terminals
• 3/8" Opening
• 0/1 Gauge
• 3 Red & 2 Black • Nickel Plated
• Resealable Polybag

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12
List price $9.99
-50% $4.99

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• Ring Terminals
• 3/8" Opening
• 0/1 Gauge
• 3 Red & 2 Black • Nickel Plated
• Resealable Polybag

Belva BAK82

8 Gauge Premium (CCA) Copper Clad Aluminum Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 600 Watts - RED

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8 Gauge Premium (CCA) Copper Clad Aluminum Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 600 Watts - RED

• Complete 8 Gauge Amplifier Installation Kit
• For Amplifiers Up To 600 Watts RMS
• Premium (CCA) Copper Clad Aluminum
• Helical Twist 2-Channel RCA Cable
• ANL/Mini-ANL Fuse Holder with 60 amp fuse
• Complies to American Wire Gauge standards

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97
List price $49.99
-50% $24.99

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Used from: $27.99 Like New from: $33.99
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Universal Siren, works with any alarm system!

• Makes noise even if thief disconnects main car battery
• Key on/off feature to allow manual override

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1
List price $39.99
-63% $14.99

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Only 1 Left!

• Makes noise even if thief disconnects main car battery
• Key on/off feature to allow manual override

JL Audio SGR-12TW3

Mesh Grille for JL Audio 12" TW3 Subwoofers

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Mesh Grille for JL Audio 12" TW3 Subwoofers

• 12" Subwoofer Grille
• Steel Mesh Material
• For Use with TW3 Series Subwoofers
• Powder Coated Satin Black Finish

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6
$49.99

In stock

• 12" Subwoofer Grille
• Steel Mesh Material
• For Use with TW3 Series Subwoofers
• Powder Coated Satin Black Finish

Tru Spec Dual 12in P (1460YX)

Empty Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers

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Empty Dual 12" Vented Prefabricated Enclosure for Sundown SA 12" Subwoofers

• 12" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Total box volume: 3.50 cubic feet
• Compatible for Sundown SA 12V2 subwoofers (Sold separately)

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6
List price $299.99
-22% $234.99

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Stinger SS69PUG

Empty Single 6x9" Sealed Front-Loaded Speaker Enclosures

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Empty Single 6x9" Sealed Front-Loaded Speaker Enclosures

• Empty Single 6x9" Speaker Enclosures
• Medium Density Fiberboard (MDF) construction with charcoal carpet finish
• Front-loaded enclosure design suitable for trucks
• Integrated terminals for easy installation and removal

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2
List price $129.00
-53% $60.99

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• Empty Single 6x9" Speaker Enclosures
• Medium Density Fiberboard (MDF) construction with charcoal carpet finish
• Front-loaded enclosure design suitable for trucks
• Integrated terminals for easy installation and removal

Stinger SGP90300

High Power 300 Amp Circuit Breaker w/ Built-In Distribution

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High Power 300 Amp Circuit Breaker w/ Built-In Distribution

• 300 AMP Circuit Breaker
• Input Gauge Size: 0 to 4 AWG
• Maximum Output Gauge: 4 AWG

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3
List price $139.00
-56% $60.99

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• 300 AMP Circuit Breaker
• Input Gauge Size: 0 to 4 AWG
• Maximum Output Gauge: 4 AWG

Metra 82-6902

Universal 1/2" Spacer for 6x9" Speakers

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Universal 1/2" Spacer for 6x9" Speakers

• Universal 1/2" Speaker Spacers
• Fits 6" x 9" Speakers
• OEM Automotive Grade ABS Plastic Construction
• Color: Black

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3
List price $29.99
-10% $26.99

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• Universal 1/2" Speaker Spacers
• Fits 6" x 9" Speakers
• OEM Automotive Grade ABS Plastic Construction
• Color: Black

NVX XIV25

16.4 ft (5 meter) 2-Channel V-Series RCA Audio Interconnect Cable

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16.4 ft (5 meter) 2-Channel V-Series RCA Audio Interconnect Cable

• Shielded noise-rejecting Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Molded ends equipped with colored channel identifiers

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43
List price $18.99
-32% $12.99

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• Shielded noise-rejecting Twisted-pair construction
• Heavy gauge OFC conductors ensure superior sound quality
• Split-tip Silver-Plated ends offer best in class signal transfer
• Molded ends equipped with colored channel identifiers

Stinger SGP90200

200 Amp Circuit Breaker

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200 Amp Circuit Breaker

• 200 Amp Circuit Breaker
• Dust and splash proof
• Accepts 1/0 or 4 gauge wire
• Easy reset/disconnect
• Can act as a master disconnect for circuits

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List price $139.00
-50% $68.99

In stock

Only 1 Left!

• 200 Amp Circuit Breaker
• Dust and splash proof
• Accepts 1/0 or 4 gauge wire
• Easy reset/disconnect
• Can act as a master disconnect for circuits

JL Audio SGRU-12

Mesh Grille for JL Audio 12" W0v3, W1v3 and W3v3 Subwoofers

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Mesh Grille for JL Audio 12" W0v3, W1v3 and W3v3 Subwoofers

• 12" Grille made specifically for the JL Audio 12W1v2, 12W3v3, or 12TW5 Sub
• Provides the Best Protection Possible
• Top-Notch JL Audio Quality
• Metal Mesh Grille Painted Black

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$49.99

In stock

• 12" Grille made specifically for the JL Audio 12W1v2, 12W3v3, or 12TW5 Sub
• Provides the Best Protection Possible
• Top-Notch JL Audio Quality
• Metal Mesh Grille Painted Black

Stinger SPT521

Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

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Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

• Gauge Reducer Adapter
• 1/0 Gauge Input to 4 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Shoc-Krome Plating

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List price $29.00
-55% $12.99

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• Gauge Reducer Adapter
• 1/0 Gauge Input to 4 Gauge Pin
• Deep Wire Recesses
• Ultimate Power Delivery
• Corrosion Resistant Shoc-Krome Plating

Limited time!

Belva BASQM

Front Load Flush Mount Flange BAWPL, BA2USB, BAVTM

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Front Load Flush Mount Flange BAWPL, BA2USB, BAVTM

• Front Load Flush Mount Flange
• For use with Belva BAWLk, BA2USB or BAVTM
• Color: Black
• Material: Plastic

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List price $1.99
-25% $1.49

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• Front Load Flush Mount Flange
• For use with Belva BAWLk, BA2USB or BAVTM
• Color: Black
• Material: Plastic

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    FAQ for Universal-Fit Audio & Electronics in 1957 FL

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1957 Harley Davidson FL?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your FL.

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    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.