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1981 GMC P3500

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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.

Overview Upgrade your Speakers Add an Amplifier Digital Sound Processors Audio Installation & Accessories Dads & Grads Sale

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.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

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Belva BH35BRB

160W Peak (80W RMS) 3.5-inch Motorcycle/Handlebar Bluetooth Stereo System with RGB Lights

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Belva BH35BRB

160W Peak (80W RMS) 3.5-inch Motorcycle/Handlebar Bluetooth Stereo System with RGB Lights

• 2-Way mini box system
• 3.5" long-excursion woofer
• Bluetooth Functions
• Built-in illuminating RBG lights

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• 2-Way mini box system
• 3.5" long-excursion woofer
• Bluetooth Functions
• Built-in illuminating RBG lights

Limited time!

Waterproof Marine Grade Cigarette Lighter Socket (Female) (Belva BAWPL)

12V-16V Locking Cigarette Lighter Port/Socket for Car Charger Power; Great for Cars, Trucks, SUV, ATV/UTV, SSV

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Waterproof Marine Grade Cigarette Lighter Socket (Female) (Belva BAWPL)

12V-16V Locking Cigarette Lighter Port/Socket for Car Charger Power; Great for Cars, Trucks, SUV, ATV/UTV, SSV

• 12V - 16V Volt Waterproof Locking Cigarette Lighter Port
• Multiple Mounting Options

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• 12V - 16V Volt Waterproof Locking Cigarette Lighter Port
• Multiple Mounting Options

Limited time!

Belva BBCRM1

Universal 1080P DVR Rearview Mirror w/ Built-in Front HD Camera and Backup Camera

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Belva BBCRM1

Universal 1080P DVR Rearview Mirror w/ Built-in Front HD Camera and Backup Camera

• Resolution: 1920 x 1080p (30 FPS) + VGA 640 x 480p (30 FPS)
• Stay aware of the road around you
• DVR Rearview Mirror
• Universal
• Built-in Front HD Camera and Backup Camera

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• Resolution: 1920 x 1080p (30 FPS) + VGA 640 x 480p (30 FPS)
• Stay aware of the road around you
• DVR Rearview Mirror
• Universal
• Built-in Front HD Camera and Backup Camera

Belva BKIT150

158 Piece Terminal Connector Kit with Crimping Tool Included

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Belva BKIT150

158 Piece Terminal Connector Kit with Crimping Tool Included

• Contains Clear Subdivided Container
• Nylon closed end connectors
• Red/blue/yellow vinyl butt connectors

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• Contains Clear Subdivided Container
• Nylon closed end connectors
• Red/blue/yellow vinyl butt connectors

Belva BTK105

Five Piece Installer's Panel Removal Installation Tool Kit for Stereo, Speakers and Car Audio Installs

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Belva BTK105

Five Piece Installer's Panel Removal Installation Tool Kit for Stereo, Speakers and Car Audio Installs

• Five Piece Installer's Removal Tool Kit
• Durable Nylon Plastic

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• Five Piece Installer's Removal Tool Kit
• Durable Nylon Plastic

Belva BBSW167

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

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Belva BBSW167

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

• 7 Meters
• 16 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

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• 7 Meters
• 16 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

2 Pack of 300 Amp Nickel-Plated ANL Fuse (Belva BANL300)

Two fuses per order. High quality 300 Amp ANL Fuses

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2 Pack of 300 Amp Nickel-Plated ANL Fuse (Belva BANL300)

Two fuses per order. High quality 300 Amp ANL Fuses

• 300A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

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• 300A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

Limited time!

Belva BATENT1

Single Knob Surface Mount Housing for use with BAWPL, BA2USB, BAVTM

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Belva BATENT1

Single Knob Surface Mount Housing for use with BAWPL, BA2USB, BAVTM

• Single Knob Surface Mount Housing Pod
• For use with Belva BAWLK, BA2USB or BAVTM

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• Single Knob Surface Mount Housing Pod
• For use with Belva BAWLK, BA2USB or BAVTM

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Belva BAK42

4 Gauge Premium (CCA) Copper Clad Aluminum Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1200 Watts - RED

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Belva BAK42

4 Gauge Premium (CCA) Copper Clad Aluminum Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1200 Watts - RED

• Complete 4 Gauge Amplifier Installation Kit
• For Amplifiers Up To 1200 Watts RMS
• Premium (CCA) Copper Clad Aluminum
• Helical Twist 2-Channel RCA Cable
• ANL/Mini-ANL Fuse Holder with 80 amp fuse
• Complies to American Wire Gauge standards

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169
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Belva BRT038

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

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Belva BRT038

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

2 Pack of 200 Amp Nickel-Plated ANL Fuse (Belva BANL200)

Two fuses per order. High quality 200 Amp ANL Fuses

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2 Pack of 200 Amp Nickel-Plated ANL Fuse (Belva BANL200)

Two fuses per order. High quality 200 Amp ANL Fuses

• 200A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

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22
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• 200A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

Belva BTK112

12-Piece Installer's Master Panel Removal Tool Kit

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Belva BTK112

12-Piece Installer's Master Panel Removal Tool Kit

• 12 Piece Installers Removal Tool Kit
• Made From Nylon Plastic and Metal
• Includes with Ford Removal Keys and Euro Radio Removal Keys
• Various Shapes and Sizes for Different Needs

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19
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• 12 Piece Installers Removal Tool Kit
• Made From Nylon Plastic and Metal
• Includes with Ford Removal Keys and Euro Radio Removal Keys
• Various Shapes and Sizes for Different Needs

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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Belva BAK82

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
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-50% $24.99

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Used from: $27.99 Like New from: $33.99

Universal Subwoofer/Speaker Terminal Cup for Boxes & Enclosures (Belva BBTCP)

Works with all subwoofer and speaker enclosures.

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Universal Subwoofer/Speaker Terminal Cup for Boxes & Enclosures (Belva BBTCP)

Works with all subwoofer and speaker enclosures.

Universal Round Chrome-plated Terminal Cup for Speaker / Subwoofer Boxes
• Chrome-Plated Contacts
• Screw Binding Posts
• Easy to Install and Use

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Universal Round Chrome-plated Terminal Cup for Speaker / Subwoofer Boxes
• Chrome-Plated Contacts
• Screw Binding Posts
• Easy to Install and Use

Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (0.77 cu ft airspace 10SQTC)

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Single 10" Sealed MDF Subwoofer Enclosure (Belva MDFS10)

10-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (0.77 cu ft airspace 10SQTC)

• 0.77 cu ft Sealed Enclosure
• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

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121
List price $99.99
-40% $59.99

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Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

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Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Dual 12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/Polyfil (2.46 cu ft Airspace - 12SQB)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

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120
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• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

Belva BLPCAM2

License Plate Mounted Waterproof Rearview Backup Camera with Built in Night Vision

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Belva BLPCAM2

License Plate Mounted Waterproof Rearview Backup Camera with Built in Night Vision

• Universal Rear View Backup Camera
• Mounting Style: Full License Plate Frame
• Resolution: 720 x 480 
• Waterproof: Yes
• Nightvision: Infrared LED's

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• Universal Rear View Backup Camera
• Mounting Style: Full License Plate Frame
• Resolution: 720 x 480 
• Waterproof: Yes
• Nightvision: Infrared LED's

Limited time!

Belva BASQM

Front Load Flush Mount Flange BAWPL, BA2USB, BAVTM

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Belva BASQM

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

4 Pack of 80 Amp Nickel-Plated MANL Fuse (Belva BMANL80)

Four fuses per order. High quality 80 Amp MANL Fuses

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4 Pack of 80 Amp Nickel-Plated MANL Fuse (Belva BMANL80)

Four fuses per order. High quality 80 Amp MANL Fuses

• 80A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

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• 80A MANL Fuse (4 Pack)
• Nickel Plated for Better Power Transfer
• Resealable Polybag
• Heavy Duty Construction

Belva BBSW127

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

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Belva BBSW127

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

• 7 Meters
• 12 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

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• 7 Meters
• 12 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

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    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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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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