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1981 BMW 528i

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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 Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 1981 BMW 528i

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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Power/Ground Wire Size
The power/ground gauge numbers represents the main wire size of the amplifier kit.

Definitions are as follows:

Gauge (wire) - The diameter of a wire. The higher the number, the thinner the wire. Example: 4 gauge wire has more strands than 10 gauge wire.

AWG (American Wire Gauge) - A standard of the dimensional characteristics of wire used to conduct electrical current or signals. AWG is identical to the Brown and Sharpe (B & S) wire gauge.
Interconnect (RCA) Signal Cables Included
Interconnect cables are required for amplifiers which are installed to the "RCA preamp low-level outputs" of a car stereo receiver. If your amplifier has high-level / speaker level inputs, then you do not need to purchase interconnects; however, interconnects offer a much higher quality sound when compared to speaker level inputs.
Speaker Wire Included
If speaker wire is included, the value will be "Yes" and if no wire is included, it will read "No".
Fuse Holder
This is the type of fuse holder that is included in the item.
Fuse Size
This is the size of the fuse that is compatible with the fuse holder. If the fuse needs to be replaced, be sure to replace it with the same size.
Number of Amplifiers Supported
This is the number of amplifiers that the amplifier kit can support. If you are are going to be powering more than one amplifier, make sure that the installation kit will support them.
Wire Material
The material that the wire is made of. Copper & aluminum are the most commonly used materials. OFC - Oxygen Free Copper is the ideal choice for wire material. Copper is a superior electrical conductor, & does not expand or contract with heat. CCA - Copper-Clad Aluminum is a suitable choice for lower powered or budget applications. The power transfer is not on par with OFC, but this material offers significant savings.
Complies to AWG Standards
Since 1857, The AWG (American Wire Gauge) system has been the standard for measuring the diameter of wire. AWG standard is the measure of bare wire to find true gauge. Companies that do not follow AWG Standards include the thickness of the wire jacket which means the actual wire is not "True to Gauge". For the best performance from your amplifier wiring kit, make sure that the cable complies to the AWG standard.
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Stinger SPXRZR4242

Polaris RZR Dual Amplifier Installation Kit 2014-Present Polaris RZR 900/1000

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Stinger SPXRZR4242

Polaris RZR Dual Amplifier Installation Kit 2014-Present Polaris RZR 900/1000

• Pre-cut and loomed power/ ground & speaker wire harnesses
• 4GA into dual 8GA power / ground wire
• 150 amp MIDI fuse
•Fusing and pre-terminated wiring

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T-Spec V10-AK1

1/0 AWG 5200W Rated AMP KIT with RCA Cables

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T-Spec V10-AK1

1/0 AWG 5200W Rated AMP KIT with RCA Cables

• 1/0 AWG Amp Kit
• 17’ V10 1/0 AWG full tinned OFC pearl multi-strand power wire
• 3’ V10 1/0 AWG full tinned OFC black multi-strand ground wire
• Compact brass ANL fuse holder with 250A fuse

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• 1/0 AWG Amp Kit
• 17’ V10 1/0 AWG full tinned OFC pearl multi-strand power wire
• 3’ V10 1/0 AWG full tinned OFC black multi-strand ground wire
• Compact brass ANL fuse holder with 250A fuse

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JL Audio XMD-PCS50A-1-L20 6 AWG Marine Amp Kit

Premium 6 AWG 12-Volt Power Connection System for Single Amplifier Located up to 20 Feet

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JL Audio XMD-PCS50A-1-L20 6 AWG Marine Amp Kit

Premium 6 AWG 12-Volt Power Connection System for Single Amplifier Located up to 20 Feet

• IP67 Rated: withstands full immersion in water up to 1 meter deep
• SAE J1171 External Ignition Protected
• Ideal for most Center Consoles, Pontoons, Runabouts and Towboats
• Designed specifically for systems up to 50A Maximum
•Made from 100% oxygen-free copper for a pure uninterrupted transfer of power

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• IP67 Rated: withstands full immersion in water up to 1 meter deep
• SAE J1171 External Ignition Protected
• Ideal for most Center Consoles, Pontoons, Runabouts and Towboats
• Designed specifically for systems up to 50A Maximum
•Made from 100% oxygen-free copper for a pure uninterrupted transfer of power

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JL Audio XMD-PCS50A-1-L10

Premium 6 AWG 12-Volt Power Connection System for Single Amplifier Located up to 10 Feet

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JL Audio XMD-PCS50A-1-L10

Premium 6 AWG 12-Volt Power Connection System for Single Amplifier Located up to 10 Feet

• IP67 Rated: withstands full immersion in water up to 1 meter deep
• SAE J1171 External Ignition Protected
• Ideal for most Center Consoles, Pontoons, Runabouts and Towboats
• Designed specifically for systems up to 50A Maximum
•Made from 100% oxygen-free copper for a pure uninterrupted transfer of power

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• IP67 Rated: withstands full immersion in water up to 1 meter deep
• SAE J1171 External Ignition Protected
• Ideal for most Center Consoles, Pontoons, Runabouts and Towboats
• Designed specifically for systems up to 50A Maximum
•Made from 100% oxygen-free copper for a pure uninterrupted transfer of power

Limited time!

Wet Sounds Wet Wire 2 AMP KIT - FRONT (WW-2 AMP KIT - FRONT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

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Wet Sounds Wet Wire 2 AMP KIT - FRONT (WW-2 AMP KIT - FRONT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper Dual Marine Amplifier Power Wiring Kit

• Dual Front Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

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• Dual Front Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 10 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

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Kicker VK6 (47VK6)

6-Gauge Oxygen Free Copper (OFC) 2-Channel Complete Amplifier Installation Kit

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Kicker VK6 (47VK6)

6-Gauge Oxygen Free Copper (OFC) 2-Channel Complete Amplifier Installation Kit

• 6 gauge Complete Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• 2 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier

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• 6 gauge Complete Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• 2 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier

Massive Audio G4

Complete 4 Gauge 100% OFC Amplifier Wiring Kit w/ 2 Channel RCA Interconnects

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Massive Audio G4

Complete 4 Gauge 100% OFC Amplifier Wiring Kit w/ 2 Channel RCA Interconnects

• 4 AWG Complete Amplifier Installation Kit
• Made From 100% Oxygen-Free Copper
• Twisted Pair RCAs
• Inline Maxi fuse holder
• Nickel-plated ring terminals

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Wet Sounds Wet Wire High Power 4 AMP KIT (WW-HP 4 AMP KIT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Amplifier Rear High-Power Wiring Kit

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Wet Sounds Wet Wire High Power 4 AMP KIT (WW-HP 4 AMP KIT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Amplifier Rear High-Power Wiring Kit

• Rear High Power Marine Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

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List price $1499.99
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• Rear High Power Marine Amplifier Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

MTX PS1K-10

10 AWG Motorsports Amplifier Kit with Power and Ground Connections

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MTX PS1K-10

10 AWG Motorsports Amplifier Kit with Power and Ground Connections

• 10 gauge Power Amplifier Installation Kit
• Designed specifically for MTX motorsports amplifiers
• Premium power and ground wire provides optimal power transfer
• ATC fuse holder offers ideal protection for powered systems

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• 10 gauge Power Amplifier Installation Kit
• Designed specifically for MTX motorsports amplifiers
• Premium power and ground wire provides optimal power transfer
• ATC fuse holder offers ideal protection for powered systems

DS18 MOFCKIT4

4-Gauge Marine Grade Tinned Complete Amplifier Installation Kit

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DS18 MOFCKIT4

4-Gauge Marine Grade Tinned Complete Amplifier Installation Kit

• 4 gauge Power Amplifier Installation Kit
• Designed specifically for car audio systems up to 1800 watts
• Made from OFC (100% Oxygen-Free Copper)
• 2 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier
• Perfect for motorcycle, powersports, or marine application

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Diamond Audio HX82

8 Gauge 4 Channel OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

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Diamond Audio HX82

8 Gauge 4 Channel OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

• 8 gauge Complete Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• 4 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier
• Noise shield directional construction with 3 tightly twisted conductor bundles

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Diamond Audio MSPWHR

8-Gauge Motorsport Power/Ground and Remote Harness Kit

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Diamond Audio MSPWHR

8-Gauge Motorsport Power/Ground and Remote Harness Kit

• 8 gauge Complete Power Amplifier Installation Kit
• Complete power kit for fairing mounted amplifier on any Harley Davidson or bikes
• Designed specifically for motorcycle audio systems up to
• Made from OFC (100% Oxygen-Free Copper)

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• 8 gauge Complete Power Amplifier Installation Kit
• Complete power kit for fairing mounted amplifier on any Harley Davidson or bikes
• Designed specifically for motorcycle audio systems up to
• Made from OFC (100% Oxygen-Free Copper)

Diamond Audio HX42

4 Gauge 2 Channel OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

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Diamond Audio HX42

4 Gauge 2 Channel OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

• 4 gauge Complete Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• 2 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier
• Noise shield directional construction with 3 tightly twisted conductor bundles

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Stinger X2K01

1/0 Gauge 100% Oxygen Free Copper Power and Ground Amplifier Kit

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Stinger X2K01

1/0 Gauge 100% Oxygen Free Copper Power and Ground Amplifier Kit

• 1/0 gauge Power Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• XLINK X-pansion Block and Multi-Fuse technology
• Heavy gauge terminals and hydraulic compressed connections

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List price $509.00
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$299.99

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• 1/0 gauge Power Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• XLINK X-pansion Block and Multi-Fuse technology
• Heavy gauge terminals and hydraulic compressed connections

Limited time!

Cerwin-Vega CAK84

8-Gauge 4 Channel Complete Amplifier Wiring Kit

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Cerwin-Vega CAK84

8-Gauge 4 Channel Complete Amplifier Wiring Kit

• 8 gauge Complete Amplifier Installation Kit
• Designed specifically for car audio systems up to
• Made from OFC (100% Oxygen-Free Copper)
• 4 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier

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NVX XCAP1F

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Diamond Audio HX02

1/0 Gauge OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

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Diamond Audio HX02

1/0 Gauge OFC (Oxygen Free Copper) Complete Amplifier Installation Kit

• 1/0 gauge Complete Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• 2 Channel RCA interconnect cables included for the audio signal connection from the receiver to the amplifier
• Noise shield directional construction with 3 tightly twisted conductor bundles

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NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

$299.99

$254.99

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Wet Sounds Wet Wire 4 AMP KIT - REAR (WW-4 AMP KIT REAR)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Marine Amplifier Rear Power Wiring Kit

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Wet Sounds Wet Wire 4 AMP KIT - REAR (WW-4 AMP KIT REAR)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Marine Amplifier Rear Power Wiring Kit

• 4-Amplifier Rear Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

15% off an NVX XCAP10H w/ Select Amp Kits
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Shop items below for 15% off up to $100 discount on Get 15% off an NVX XCAP10H

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

$299.99

$254.99

$45 Savings!

Add to cart

• 4-Amplifier Rear Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 20 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

Limited time!

Wet Sounds Wet Wire 4 AMP KIT - FRONT (WW-4 AMP KIT-FRONT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Marine Amplifier Power Wiring Kit

WW-4 AMP KIT-FRONT big
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Wet Sounds Wet Wire 4 AMP KIT - FRONT (WW-4 AMP KIT-FRONT)

1/0-gauge and 4-gauge 100% Oxygen Free Copper 4-Marine Amplifier Power Wiring Kit

• 4-Amplifier Front Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

15% off an NVX XCAP10H w/ Select Amp Kits
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List price $629.99
-6% $589.99

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Shop items below for 15% off up to $100 discount on Get 15% off an NVX XCAP10H

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

NVX XCAP10H (TRUE 10 FARAD CAPACITANCE)

$299.99

$254.99

$45 Savings!

Add to cart

• 4-Amplifier Front Installation Kit
• Designed specifically for car audio systems with two amplifiers
• Made from OFC (100% Oxygen-Free Copper)
• Includes 10 ft. 1/0-gauge and 20 ft. 4-gauge power and ground wires
• CEA-2015 and BC-5W2 marine compliant

Metra MPS-AK82

2-Channel Motorcycle and Powersports Amp Kit

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Metra MPS-AK82

2-Channel Motorcycle and Powersports Amp Kit

• 2-channel amplifier wiring kit
• Waterproof fuse holder with (2) 30 amp fuses
• 10' long speaker wire
• Quick Disconnect Connectors for Easy Removal of Amplifier
• RCA's and Speaker Wires Individually labeled for easy identification

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Universal Icon Universal – fits most vehicles.

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List price $69.00
-42% $39.99

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• 2-channel amplifier wiring kit
• Waterproof fuse holder with (2) 30 amp fuses
• 10' long speaker wire
• Quick Disconnect Connectors for Easy Removal of Amplifier
• RCA's and Speaker Wires Individually labeled for easy identification

Kicker PKD1 (46PKD1) (Like New (Open Box))

1/0 Gauge Power Amplifier Installation Kit for Dual or Single Amp Installs

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Kicker PKD1 (46PKD1) (Like New (Open Box))

1/0 Gauge Power Amplifier Installation Kit for Dual or Single Amp Installs

• P-Series PKD1 1/0AWG 2-Channel
• Complete with Full Spec wire, hardware, distribution block and fusing
• 4-8 Gauge out
• Brass construction

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-55% $195.49

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• P-Series PKD1 1/0AWG 2-Channel
• Complete with Full Spec wire, hardware, distribution block and fusing
• 4-8 Gauge out
• Brass construction

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    FAQ for Universal-Fit Audio & Electronics in 1981 528i

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1981 BMW 528i?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your 528i.

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