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1987 GMC R3500 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 1987 GMC R3500 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.

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

Directed 504D

Stinger DoubleGuard Shock Sensor

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Stinger DoubleGuard Shock Sensor

• Stinger DoubleGuard Shock Sensor
• Adjustable Sensitivity
• Wire Harness Included

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• Stinger DoubleGuard Shock Sensor
• Adjustable Sensitivity
• Wire Harness Included

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PAC RPA-VA1

Video Adapter and Video Signal Filter

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Video Adapter and Video Signal Filter

• Converts differential video signal to a single-ended composite video signal
• Improves display of OE camera on the aftermarket radio
• Reduces/eliminates video noise
• Two-wire power connection for simple installation
• Great for Ford and Chrysler vehicles and many more

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List price $59.00
-56% $25.99

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• Converts differential video signal to a single-ended composite video signal
• Improves display of OE camera on the aftermarket radio
• Reduces/eliminates video noise
• Two-wire power connection for simple installation
• Great for Ford and Chrysler vehicles and many more

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

In stock

Used from: $441.99

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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• 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

JL Audio 12W6v3-D4

600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

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600W RMS 12" W6v3 Series Dual 4-ohm Car Subwoofer

• RMS Power: 600 watts
• Impedance: Dual 4 ohm
• Mineral-Filled Polypropylene Cone
• Butyl Rubber Surround
• Mount depth: 7.52"
• Sensitivity: 85.4 dB

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JL Audio SGR-12W6v2/v3

Mesh Grille for JL Audio 12" W6v2 and W6v3 Subwoofers (Black)

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Mesh Grille for JL Audio 12" W6v2 and W6v3 Subwoofers (Black)

• 12" Mesh GrilleInsert
• Made Specifically for the 12w6v2.c3 12" W6 Subwoofer
• Made with Top-Notch JL Audio Quality
• No Screws or Extra Hardware Needed

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$39.99

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• 12" Mesh GrilleInsert
• Made Specifically for the 12w6v2.c3 12" W6 Subwoofer
• Made with Top-Notch JL Audio Quality
• No Screws or Extra Hardware Needed

Viper 2103V

1-Way Keyless Entry Car Alarm System with 4-Button Transmitter

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1-Way Keyless Entry Car Alarm System with 4-Button Transmitter

• 1-Way Keyless Entry Car Alarm System
• 4-Button Transmitter
• 1/4 mile (1320 feet) range

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List price $139.99
-14% $119.99

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• 1-Way Keyless Entry Car Alarm System
• 4-Button Transmitter
• 1/4 mile (1320 feet) range

NVX VMPY21

3.5mm Y Adapter for VMPREM Wired Waterproof Remote

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3.5mm Y Adapter for VMPREM Wired Waterproof Remote

• Marine-rated Y-connector

2+ offers available
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List price $12.49
-20% $9.99

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Available Offers (2) for NVX VMPY21
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List price $12.49
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2026-07-27 11:08:20

• Marine-rated Y-connector

Audiovox VODP10

10.1" High-Resolution Digital LED Backlit Overhead Monitor with Two Headphones

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10.1" High-Resolution Digital LED Backlit Overhead Monitor with Two Headphones

• 10.1" High-Resolution Digital LED Backlit Overhead Monitor
• Built-in DVD, USB and HDMI inputs
• Dual channel IR headphone transmitter with 2 headphones
• Display Type: TFT Active Matrix LCD
• Screen Resolution: 1024 x 600

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Ships in 10-14 days

• 10.1" High-Resolution Digital LED Backlit Overhead Monitor
• Built-in DVD, USB and HDMI inputs
• Dual channel IR headphone transmitter with 2 headphones
• Display Type: TFT Active Matrix LCD
• Screen Resolution: 1024 x 600

Directed 451M

Door Lock Relay Module with Resistors DEI 451M

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Door Lock Relay Module with Resistors DEI 451M

• Door Lock Relay Module with Resistors DEI 451M
• Compatible with most Directed Electronics systems
• 3-Pin Plug Interface with DEI system
• Will interface with most electric power door lock systems drawing 30A or less

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• Door Lock Relay Module with Resistors DEI 451M
• Compatible with most Directed Electronics systems
• 3-Pin Plug Interface with DEI system
• Will interface with most electric power door lock systems drawing 30A or less

Sundown Audio 4BLK

4-Gauge Heat Shrink for Cable Crimp Ends (Black, Pack of 10)

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4-Gauge Heat Shrink for Cable Crimp Ends (Black, Pack of 10)

• 10-pack 4-gauge Heat Shrink
• Protect your cable crimp ends with style
• Color: Black

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List price $6.59
-17% $5.49

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• 10-pack 4-gauge Heat Shrink
• Protect your cable crimp ends with style
• Color: Black

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-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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-17% $99.99

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

Limited time!

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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List price $9.99
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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

Install Bay SLT18

Split Loom Tubing 1/8 Inch Diameter 100 Foot Coil

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Split Loom Tubing 1/8 Inch Diameter 100 Foot Coil

• Split Loom Tubing
• Diameter: 1/8"
• Length: 100 Ft
• Material Type: Polyethylene
• Exterior Finish: Smooth
• Color: Black

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List price $31.99
-13% $27.99

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Only 2 Left!

• Split Loom Tubing
• Diameter: 1/8"
• Length: 100 Ft
• Material Type: Polyethylene
• Exterior Finish: Smooth
• Color: Black

Stinger SPXRGBUBKIT8

8-Piece Underbody RGB LED Light Kit

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8-Piece Underbody RGB LED Light Kit

• 8-way RGB LED Underbody Light Kit
• IP65 water-resistant rating
• Bright CREE light pods
• Controllable LED colors and patterns via Android or iOS app

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Universal – fits most vehicles.
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List price $429.00
-30% $299.00

Available

Ships in 10-14 days

• 8-way RGB LED Underbody Light Kit
• IP65 water-resistant rating
• Bright CREE light pods
• Controllable LED colors and patterns via Android or iOS app

Limited time!

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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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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List price $7.99
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• 300A ANL Fuse
• 2 Pack
• Nickel Plated
• Resealable Polybag
• Heavy Duty Construction

PAC LP7-2

2-Channel LocPRO Series Line Output Converter with Remote Turn-On

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2-Channel LocPRO Series Line Output Converter with Remote Turn-On

• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

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• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

JBL JBLSUBBPACCKITAM

BassPro Go Vehicle Installation Kit

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BassPro Go Vehicle Installation Kit

• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

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List price $139.95
-21% $109.95

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• BassPro Go Vehicle Installation Kit
• Designed for installing a JBL BassPro Go powered subwoofer in another vehicle
• Vehicle mounting bracket, hardware and harnesses included

Metra 44-EC48 Antenna Extension

48" Universal Antenna Extension Cable

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48" Universal Antenna Extension Cable

• Universal Antenna Extender • Extends Antenna 48" (4 ft.)

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• Universal Antenna Extender • Extends Antenna 48" (4 ft.)

NVX - Worth the Envy - Direct to Consumer Car Audio

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    FAQ for Universal-Fit Audio & Electronics in 1987 R3500 Pickup

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1987 GMC R3500 Pickup?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your R3500 Pickup.

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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.