Garage
Shop

1981 GMC C3500 Pickup

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 C3500 Pickup

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.

Loading...
Filters
filter-icon Filters & Sort

DS18 MOFC8GA100P

100 Ft. 8 Gauge Ultra Flex Marine Grade Tinned Power Wire

MOFC8GA100P big
Go to item page Right Arrow Icon of Right Arrow

100 Ft. 8 Gauge Ultra Flex Marine Grade Tinned Power Wire

• 100-feet 8-gauge marine grade tinned power wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $20.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $244.99
-17% $203.95

In stock.

• 100-feet 8-gauge marine grade tinned power wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

DS18 MOFC8GA100G

100 Ft. 8 Gauge Ultra Flex Marine Grade Tinned Ground Wire

MOFC8GA100G big
Go to item page Right Arrow Icon of Right Arrow

100 Ft. 8 Gauge Ultra Flex Marine Grade Tinned Ground Wire

• 100-feet 8-gauge marine grade tinned ground wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $20.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $244.99
-17% $203.95

In stock.

• 100-feet 8-gauge marine grade tinned ground wire
• OFC (100% Oxygen-Free Copper) material
• Wiring for high performance applications
• Ultra-flex wiring for high flex and extra durability

Stinger SPW18TB

250 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Black)

SPW18TB big
Go to item page Right Arrow Icon of Right Arrow

250 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Black)

• 250 feet 8 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Ultra-flexible matte jacket

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $42.30 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $619.00
-32% $423.00

Available

Ships in 10-14 days

• 250 feet 8 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Ultra-flexible matte jacket

Stinger SQPH4BL

100 ft 4 Gauge Hybrid Series Power Wire (Blue)

SQPH4BL big
Go to item page Right Arrow Icon of Right Arrow

100 ft 4 Gauge Hybrid Series Power Wire (Blue)

• 4 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• 70 percent copper, 30 percent CCA

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $18.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$184.00

Available

Ships in 10-14 days

• 4 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• 70 percent copper, 30 percent CCA

Kicker KMWPR050 (47KMWPR050)

50ft Red 1/0 Gauge Red Marine Power Wire

KMWPR050 big
Go to item page Right Arrow Icon of Right Arrow

50ft Red 1/0 Gauge Red Marine Power Wire

• Marine Rated Power Wire

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $45.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$449.99

Available

Ships in 10-14 days

• Marine Rated Power Wire

Stinger SSVLP4BL

100 ft 4-Gauge Select Series Speaker Wire (Blue)

SSVLP4BL big
Go to item page Right Arrow Icon of Right Arrow

100 ft 4-Gauge Select Series Speaker Wire (Blue)

• 4 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• Soft PVC insulation with heat resistance elements

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $15.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $229.00
-32% $155.00

Available

Ships in 10-14 days

• 4 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• Soft PVC insulation with heat resistance elements

Stinger SSVLP8BK

100 ft 8-Gauge Select Series Speaker Wire (Black)

SSVLP8BK big
Go to item page Right Arrow Icon of Right Arrow

100 ft 8-Gauge Select Series Speaker Wire (Black)

• 8 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Black
• Soft PVC insulation with heat resistance elements

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $15.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $229.00
-32% $155.00

Available

Ships in 10-14 days

• 8 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Black
• Soft PVC insulation with heat resistance elements

Stinger SSVLP8R

100 ft 8-Gauge Select Series Speaker Wire (Red)

SSVLP8R big
Go to item page Right Arrow Icon of Right Arrow

100 ft 8-Gauge Select Series Speaker Wire (Red)

• 8 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Red
• Soft PVC insulation with heat resistance elements

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $15.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $229.00
-32% $155.00

Available

Ships in 10-14 days

• 8 gauge Speaker Wire
• CCA (Copper-Clad Aluminum) material
• Color: Red
• Soft PVC insulation with heat resistance elements

Sundown Audio 1/0S50

50 ft 1/0-Gauge Power Wire (Silver)

1/0S50 big
Go to item page Right Arrow Icon of Right Arrow

50 ft 1/0-Gauge Power Wire (Silver)

• 50 feet 1/0 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Silver
• 112 strands with flexible PVC insulation

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $45.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $539.99
-17% $449.99

Available

Ships in 10-14 days

• 50 feet 1/0 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Silver
• 112 strands with flexible PVC insulation

Stinger SPW316BL

500 ft. 16 Gauge Pro Series OFC Power Wire (Blue)

SPW316BL big
Go to item page Right Arrow Icon of Right Arrow

500 ft. 16 Gauge Pro Series OFC Power Wire (Blue)

• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Blue

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $229.00
-49% $116.99

Available

Ships in 10-14 days

• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Blue

Stinger SPW316YL

500 ft. 16 Gauge Pro Series OFC Power Wire (Yellow)

SPW316YL big
Go to item page Right Arrow Icon of Right Arrow

500 ft. 16 Gauge Pro Series OFC Power Wire (Yellow)

• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Yellow

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $13.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $229.00
-39% $139.00

Available

Ships in 10-14 days

• 500 ft. 16 Gauge Power Wire
• Pure (OFC) Oxygen Free Copper
• Coated in high-quality PVC insulation
• Chemical and Temperature Resistant Jacket
• Color: Yellow

Stinger SQVLP8BL

250 ft 8 Gauge Sound Quest Value Series Power Wire (Blue)

SQVLP8BL big
Go to item page Right Arrow Icon of Right Arrow

250 ft 8 Gauge Sound Quest Value Series Power Wire (Blue)

• 8 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• Length: 250 feet

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $12.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$124.00

Available

Ships in 10-14 days

• 8 gauge Power Wire
• CCA (Copper-Clad Aluminum) material
• Color: Blue
• Length: 250 feet

T-Spec V10GW-8250

250 ft. (76.20m) 8 Gauge V10 Series Full OFC True Spec Ground Wire

V10GW-8250 big
Go to item page Right Arrow Icon of Right Arrow

250 ft. (76.20m) 8 Gauge V10 Series Full OFC True Spec Ground Wire

• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Grey

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $51.40 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $571.99
-10% $513.99

In stock.

• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Grey

Kicker KMWPY420 (47KMWPY420)

20 Feet of Yellow Marine Rated 4 Gauge Wire

KMWPY420 big
Go to item page Right Arrow Icon of Right Arrow

20 Feet of Yellow Marine Rated 4 Gauge Wire

• Marine Rated Power Wire
• 4 AWG

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$89.99

Available

Ships in 10-14 days

• Marine Rated Power Wire
• 4 AWG

T-Spec V8GT10RD-50

1/0 AWG 50Ft OFC Power Wire

V8GT10RD-50 big
Go to item page Right Arrow Icon of Right Arrow

1/0 AWG 50Ft OFC Power Wire

• OFC Power Wire
• Red Single Strand Wire
• Made with Copper
• 50Ft Spool

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $50.60 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $562.99
-10% $505.99

In stock.

• OFC Power Wire
• Red Single Strand Wire
• Made with Copper
• 50Ft Spool

T-Spec V10PW-1050

50 ft. (15.24m) 1/0 Gauge V10 Series Full OFC True Spec Power Wire

V10PW-1050 big
Go to item page Right Arrow Icon of Right Arrow

50 ft. (15.24m) 1/0 Gauge V10 Series Full OFC True Spec Power Wire

• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Pearl

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $64.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $721.99
-10% $648.99

Available

Ships in 10-14 days

• Meets CEA and ANSI Specification for Wire Gauge
• Full Virgin OFC Copper Construction
• Ultra-flexible PVC Blended Jacket
• Color: Matte Pearl

JL Audio XD-RPW4-100

4 AWG 100 ft (30.5 m) Spool of Translucent Red Power Wire

XD-RPW4-100 big
Go to item page Right Arrow Icon of Right Arrow

4 AWG 100 ft (30.5 m) Spool of Translucent Red Power Wire

• True 4 AWG specification wire
• 1,862 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $58.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$579.99

Available

Ships in 10-14 days

Like New from: $492.99

• True 4 AWG specification wire
• 1,862 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

JL Audio XD-BPW8-250

8 AWG 250 ft (76.2 m) Spool of Translucent Blue Power Wire

XD-BPW8-250 big
Go to item page Right Arrow Icon of Right Arrow

8 AWG 250 ft (76.2 m) Spool of Translucent Blue Power Wire

• True 8 AWG specification wire
• 735 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $58.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$579.99

Available

Ships in 10-14 days

• True 8 AWG specification wire
• 735 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

JL Audio XD-RPW1/0-50

1/0 AWG 50 ft (15.2 m) Spool of Translucent Red Power Wire

XD-RPW1/0-50 big
Go to item page Right Arrow Icon of Right Arrow

1/0 AWG 50 ft (15.2 m) Spool of Translucent Red Power Wire

• True 1/0 AWG specification wire
• 4,704 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $75.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$749.99

Available

Ships in 10-14 days

• True 1/0 AWG specification wire
• 4,704 strands of pure OFC Copper
• Tinned for corrosion resistance (marine-ready)
• Soft, flexible PVC Jacket

Stinger SPW14TB250

250 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Black)

SPW14TB250 big
Go to item page Right Arrow Icon of Right Arrow

250 Ft. 4 Gauge Pro Series 100% Oxygen Free Copper Power Wire (Black)

• 250 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Ultra flexible matte jacket

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $99.20 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $1459.00
-32% $992.00

Available

Ships in 10-14 days

• 250 feet 4 gauge Power Wire
• OFC (100% Oxygen-Free Copper) material
• Color: Black
• Ultra flexible matte jacket

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 1981 C3500 Pickup

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1981 GMC C3500 Pickup?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your C3500 Pickup.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store
    Delete

    1981 GMC C3500 Pickup

    1987 Chevrolet Nova

    1955 GMC 300

    2008 Audi S4

    1985 Isuzu Trooper

    2012 Buick Enclave

    2018 Volvo S60

    1993 Subaru SVX

    2023 Audi Q5

    2001 Mercedes-Benz E-Class

    Vehicle
    Store
    Delete

    2006 Suzuki RM65

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm
    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue
    Loading...
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon

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

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.