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1981 GMC P3500

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 1981 GMC P3500

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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JL Audio 10TW3-D4

400W RMS 10" TW3 Series Dual 4-ohm Shallow Subwoofer

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400W RMS 10" TW3 Series Dual 4-ohm Shallow Subwoofer

• RMS Power: 400 watts
• Polymer/Mica Composite Cone
• Rubber Surround
• Impedance: Dual 4 ohm
• Mount depth: 3.25"
• Sensitivity: 82.10 dB

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$519.99

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Used from: $441.99

Install Bay Firewall Grommet (IBFG4)

4 Gauge (7/8" Mounting Hole) Waterproof Firewall Grommet

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4 Gauge (7/8" Mounting Hole) Waterproof Firewall Grommet

• 4 Gauge Firewall Grommet
• IP68 Waterproof Rating
• Protects Cables When Installing Through a FIrewall
• Sold Individually

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• 4 Gauge Firewall Grommet
• IP68 Waterproof Rating
• Protects Cables When Installing Through a FIrewall
• Sold Individually

Stinger SGP35

500 Amp Relay and Isolator

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500 Amp Relay and Isolator

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

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List price $379.00
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• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

SMD 2 Channel Heavy Duty Square Speaker Terminal (Grade 8)

Two Channel Square Speaker Terminal with Grade 8 Terminals, 3/4" PVC (Black)

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Two Channel Square Speaker Terminal with Grade 8 Terminals, 3/4" PVC (Black)

• Heavy duty terminals for serious applications
• Lightweight 3/4" PVC
• Won't break or leak under high pressure
• 5/16" Bolt Terminal
• All Grade 8 Hardware
• Two Channel

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List price $29.98
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Only 1 Left!

• Heavy duty terminals for serious applications
• Lightweight 3/4" PVC
• Won't break or leak under high pressure
• 5/16" Bolt Terminal
• All Grade 8 Hardware
• Two Channel

Metra 44-EC6R Antenna Extension

6" Universal Antenna Extension Cable with Right Angle Male

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6" Universal Antenna Extension Cable with Right Angle Male

• Universal Antenna Extender
• Extends Antenna 6" (.5 ft.)
• Right Angle Male Connector

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• Universal Antenna Extender
• Extends Antenna 6" (.5 ft.)
• Right Angle Male Connector

JL Audio HD-RLC

Flush-Mount Wired Bass Remote Controller for JL Audio HD, MHD and XDM Amplifiers

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Flush-Mount Wired Bass Remote Controller for JL Audio HD, MHD and XDM Amplifiers

• Wired Bass Remote Controller
• Compatible with select JL Audio HD, MHD and XDM amplifiers
• Flush-mountable installation
• Color: Black

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• Wired Bass Remote Controller
• Compatible with select JL Audio HD, MHD and XDM amplifiers
• Flush-mountable installation
• Color: Black

4 Pack of 150 Amp Nickel-Plated MANL Fuse (Belva BMANL150)

Four fuses per order. High quality 150 Amp MANL Fuses

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Four fuses per order. High quality 150 Amp MANL Fuses

• 150A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

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• 150A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

Belva BAAUXUSB

USB and AUX Car Audio Adapter

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USB and AUX Car Audio Adapter

• USB/AUX input
• 6-foot cable
• front-mounted USB-A port and 3.5mm aux input
• 1" mounting hole required
•Easy screw in style installation

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List price $14.99
-47% $7.99

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• USB/AUX input
• 6-foot cable
• front-mounted USB-A port and 3.5mm aux input
• 1" mounting hole required
•Easy screw in style installation

AudioControl AC-LGD 20

Load Generating Device and Signal Stabilizers for Non-Amplified Chrysler, Dodge, Jeep and Maserati Sound Systems

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Load Generating Device and Signal Stabilizers for Non-Amplified Chrysler, Dodge, Jeep and Maserati Sound Systems

• Load Generating Device and Signal Stabilizers
• Designed for non-amplified Dodge, Chrysler, Jeep and Maserati sound systems
• Generates load and stabilize signal from a non-amplified factory system
• Operating Impedance: 20 ohms

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List price $69.00
-57% $29.99

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• Load Generating Device and Signal Stabilizers
• Designed for non-amplified Dodge, Chrysler, Jeep and Maserati sound systems
• Generates load and stabilize signal from a non-amplified factory system
• Operating Impedance: 20 ohms

Stinger SHD20

Stinger SHD20 HPM Series Power or Ground Distribution Block with Satin Chrome Finish

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Stinger SHD20 HPM Series Power or Ground Distribution Block with Satin Chrome Finish

HPM Series Power or Ground Distribution Block • One 1/0 Gauge or 4 Gauge Input • Two 4/8 Gauge Outputs • Protective Cover Included • Corrosion Resistant Satin Chrome Finish

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HPM Series Power or Ground Distribution Block • One 1/0 Gauge or 4 Gauge Input • Two 4/8 Gauge Outputs • Protective Cover Included • Corrosion Resistant Satin Chrome Finish

Single 12" Vented MDF Subwoofer Enclosure (Belva 1SV12B)

12-inch Vented Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.8 cu ft airspace 1SV12B)

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12-inch Vented Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.8 cu ft airspace 1SV12B)

• Single 12" Vented MDF Enclosure
• Holds one 12" subwoofer
• 3/4 MDF (Medium Density Fiberboard) Construction
• Durable black carpeting
• Gold Terminals
• Internal Box Volume: 1.8 cubic ft.

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List price $95.99
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Stinger SVMR

Red LED Voltage Display

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Red LED Voltage Display

• Red LED Voltage Display
• Universal Mounting
• Monitor System Voltage
• Easy Installation

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List price $49.00
-49% $24.99

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• Red LED Voltage Display
• Universal Mounting
• Monitor System Voltage
• Easy Installation

Stinger SGP90250

High Power 250Amp Circuit Breaker w/ Built-In Distribution

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High Power 250Amp Circuit Breaker w/ Built-In Distribution

• Stinger Select Circuit Breaker
• Power Rating: 250 Amps
• Push Button Reset
• Water Resistant Housing
• Integrated Holes for Simple Mounting
• Compact and Lightweight Design

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List price $139.00
-53% $65.99

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• Stinger Select Circuit Breaker
• Power Rating: 250 Amps
• Push Button Reset
• Water Resistant Housing
• Integrated Holes for Simple Mounting
• Compact and Lightweight Design

Belva BAMMD3

Automotive 9-Function Digital Multimeter Tester

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Automotive 9-Function Digital Multimeter Tester

• Features easy-to-read 2-3/4" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 36 in. 18 gauge CCA test leads

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• Features easy-to-read 2-3/4" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 36 in. 18 gauge CCA test leads

NVX XLCA2

2-Channel Line Out Converter xBOOST Technology with Remote Bass Knob

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2-Channel Line Out Converter xBOOST Technology with Remote Bass Knob

• 2-channel line out converter
• Speaker Level Input Accepts Up To 400 Watts RMS
• Bass Enhancer And Bass Compensation
• xBOOST Technology
• Selectable Auto On
• 9.5 Volt Pre-Out
• 12 Volt Trigger Out

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-7% $49.99

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• 2-channel line out converter
• Speaker Level Input Accepts Up To 400 Watts RMS
• Bass Enhancer And Bass Compensation
• xBOOST Technology
• Selectable Auto On
• 9.5 Volt Pre-Out
• 12 Volt Trigger Out

NVX XVRC2

Universal Remote Level Controller/Bass Knob with Digital Voltmeter

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Universal Remote Level Controller/Bass Knob with Digital Voltmeter

• NVX Remote Level Controller with Digital Voltmeter
• Can adjust the amplifier gain even while driving
• In-dash or Under-dash mountable
• Compatible with most head units/amplifiers combinations
• Blue LED display (high voltage / low voltage)

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List price $99.99
-67% $32.99

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Used from: $23.09

• NVX Remote Level Controller with Digital Voltmeter
• Can adjust the amplifier gain even while driving
• In-dash or Under-dash mountable
• Compatible with most head units/amplifiers combinations
• Blue LED display (high voltage / low voltage)

Stinger SS69HBG

Empty Single 6x9" Sealed Hatchback Speaker Enclosures

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Empty Single 6x9" Sealed Hatchback Speaker Enclosures

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

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List price $129.00
-55% $57.99

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

Stinger SSGLI

Select Series Ground Loop Isolator

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Select Series Ground Loop Isolator

• 2-Channel Ground Loop Isolator
• Eliminates Noise and Static

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• 2-Channel Ground Loop Isolator
• Eliminates Noise and Static

Limited time!

Kicker DL7R122 (45DL7R122)

2400W Peak (1200W RMS) Loaded Dual 12" Vented Enclosure

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2400W Peak (1200W RMS) Loaded Dual 12" Vented Enclosure

• Ported enclosure with 2 12" Solo-Baric L7R Series Subwoofer
• 1200 watts RMS (2400 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 33-3/4" L x 15-7/8" H x 15-1/4" W x 20-3/8" W2

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List price $699.99
Save $180.03
-26% $519.96

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NVX VBTERM2

Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

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Round Push Style Outer Design Terminal Cups With Chrome-Plated Contacts

• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

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• Universal Round Chrome-plated Terminal Cup for Speaker & Subwoofer boxes
• Chrome-plated contacts for optimal signal transfer
• Screw binding posts for a tight secure connection
• Positive (Red) and negative (Black) indicators to ensure proper wiring
• Easy to install and use

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    FAQ for Universal-Fit Audio & Electronics in 1981 P3500

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1981 GMC P3500?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your P3500.

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