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1988 Audi 90

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 1988 Audi 90

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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Kicker PKD4 (46PKD4)

4 Gauge to 8 Gauge Multiple Amplifier Installation Kit for Wiring Power to Two - Four Amplifiers

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4 Gauge to 8 Gauge Multiple Amplifier Installation Kit for Wiring Power to Two - Four Amplifiers

• 4AWG 2-Channel Power Kit
• Top-quality Hyper-Flex power, ground and turn-on cables
• A heavy-duty AFS fuse holder, fuse, distribution block, terminals and zip ties come in the kit

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• 4AWG 2-Channel Power Kit
• Top-quality Hyper-Flex power, ground and turn-on cables
• A heavy-duty AFS fuse holder, fuse, distribution block, terminals and zip ties come in the kit

T-Spec V8-AK4

4 Gauge V8 Series OFC Amp Kit w/2-Channel RCAs for Systems up to 1500 Watts

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4 Gauge V8 Series OFC Amp Kit w/2-Channel RCAs for Systems up to 1500 Watts

• For Systems up to 1500 Watts
• Full Oxygen-Free Copper solid silver tinned Construction
• Marine Compliant RCA, Power And Ground Wire
• Compact Brass Fusing And Distribution
• Miscellaneous Connectors, Terminals And Wire Ties
• MINI ANL Fuse Holder with 80A Fuse

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Stinger 8 Gauge Amp Wiring Kit (SSK8)

Complete 8 Gauge CCA Amplifier Wiring Kit w/ 2 Channel RCA Interconnects & MIDI Fuse w/ Holder

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Complete 8 Gauge CCA Amplifier Wiring Kit w/ 2 Channel RCA Interconnects & MIDI Fuse w/ Holder

•Designed specifically for car audio systems up to 600 watts
• Premium CCA power and ground wire provides optimal power transfer
• True-to-Gauge cables/wires meet or exceed the industry standard

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NVX XCAP1F

$109.99

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Sundown Audio 4KIT

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

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4 Gauge 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

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List price $239.99
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T-Spec 0 Gauge Amp Kit (V6-RAK1-0)

1/0 Gauge V6 Series CCA 2-Channel Amplifier WIring Kit for Systems up to 2400 Watts

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1/0 Gauge V6 Series CCA 2-Channel Amplifier WIring Kit for Systems up to 2400 Watts

• For Systems up to 2400 Watts
• Copper-Clad Construction
• Marine Compliant Power And Ground Wire
• Compact Brass Fusing with a 60A Fuse

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• For Systems up to 2400 Watts
• Copper-Clad Construction
• Marine Compliant Power And Ground Wire
• Compact Brass Fusing with a 60A Fuse

Stinger SSK4ANL

Complete 4 Gauge Amplifier Wiring Kit w/ 2 Channel RCA Interconnects & ANL Fuse w/ Holder

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Complete 4 Gauge Amplifier Wiring Kit w/ 2 Channel RCA Interconnects & ANL Fuse w/ Holder

•Designed specifically for car audio systems up to 1,000 watts
• Premium CCA power and ground wire provides optimal power transfer
• True-to-Gauge cables/wires meet or exceed the industry standard

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Metra JP-18AMP-2

4-Gauge Complete Amplifier Installation Kit and Brackets for Select 2018-up Vehicles from Jeep

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4-Gauge Complete Amplifier Installation Kit and Brackets for Select 2018-up Vehicles from Jeep

• 4 gauge Complete Amplifier Installation Kit
• Designed for select 2018-up select Jeep vehicles with non-amplified systems
• RCA interconnect cables included for the audio signal connection from the receiver to the amplifier
• Black powder-coated amplifier racks included

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The InstallBay AK02

0 Gauge Complete Amplifier Installation Kit

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0 Gauge Complete Amplifier Installation Kit

• 0 Gauge Amplifier Installation Kit
• Everything that you Need to Power an Amplifier up to 2000W!
• 17ft. 0 Gauge Blue Power Cable
• 3ft. 0 Gauge Black Ground Cable
• 17ft. Blue RCA Cable

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• 0 Gauge Amplifier Installation Kit
• Everything that you Need to Power an Amplifier up to 2000W!
• 17ft. 0 Gauge Blue Power Cable
• 3ft. 0 Gauge Black Ground Cable
• 17ft. Blue RCA Cable

Rockford Fosgate RFK4D

4 Gauge Complete Dual Amplifier Installation Kit

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4 Gauge Complete Dual Amplifier Installation Kit

• Dual Amplifier Complete 4 Gauge Amplifier Installation Amp Kit
• 100% Pure Crystal-Oxygen Free Copper (PC-OFC)
• FULL Spec Cable Meets or Exceeds AWG (American Wire Gauge) Requirements

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15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.
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JL Audio XD-PCS2-2B Dual Amplifier Wiring Kit

2 AWG Premium Series Dual Amplifier Power Connection Kit

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2 AWG Premium Series Dual Amplifier Power Connection Kit

• 2 Gauge Amplifier Kit • Power Kit
• Designed for Installing Two Amplifiers
• True AWG Cable
• Includes Distribution Blocks, Fuse Holders, Ground Lugs, and Installation Accessories
• For Systems up to 1500 Watts

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• 2 Gauge Amplifier Kit • Power Kit
• Designed for Installing Two Amplifiers
• True AWG Cable
• Includes Distribution Blocks, Fuse Holders, Ground Lugs, and Installation Accessories
• For Systems up to 1500 Watts

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Stinger 1/0 Gauge Amp Kit (SK4201)

1/0 Gauge 4000 Series Power Amplifier Installation Kit

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1/0 Gauge 4000 Series Power Amplifier Installation Kit

• 1/0 Gauge 4000 Series Power Amplifier Wiring Kit
• Designed Specifically for Car Audio Systems up to 3400 Watts
• Made from 100% Oxygen-Free Copper
• HyperTwist Wire Construction
• Tru-Spec Wire Gauge

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• 1/0 Gauge 4000 Series Power Amplifier Wiring Kit
• Designed Specifically for Car Audio Systems up to 3400 Watts
• Made from 100% Oxygen-Free Copper
• HyperTwist Wire Construction
• Tru-Spec Wire Gauge

JL Audio XMD-PCS30A-1-L12

9-Gauge Premium Marine Amplifier Installation Kit

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9-Gauge Premium Marine Amplifier Installation Kit

• 9 gauge Power Amplifier Installation Kit
• Designed specifically for car audio systems up to
• Made from OFC (100% Oxygen-Free Copper)

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$169.99

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• 9 gauge Power Amplifier Installation Kit
• Designed specifically for car audio systems up to
• Made from OFC (100% Oxygen-Free Copper)

Cerwin-Vega CAK42

4 Gauge 2-Channel Oxygen Free Copper Amplifier Installation Kit

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4 Gauge 2-Channel Oxygen Free Copper Amplifier Installation Kit

• 4 gauge Complete Amplifier Installation Kit
• Designed specifically for car audio systems up to 1200 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

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15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.

The InstallBay AK4ANL

4 Gauge Complete Amplifier Installation Kit with RCA Interconnect Cables & ANL Fuse Holder

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4 Gauge Complete Amplifier Installation Kit with RCA Interconnect Cables & ANL Fuse Holder

• Complete 4 Gauge Amplifier Installation Kit with RCA Interconnect Cables
• Perfect for 1800 Watts Amplifier Setup
• 17ft. Blue Power Cable
• 3ft. Black Ground Cable
• 17ft. Blue RCA Cable

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15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.

Kicker KMPK4 (47KMPK4)

4 Gauge Marine Amplifier Installation Wiring Kit

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4 Gauge Marine Amplifier Installation Wiring Kit

• 4 gauge Power Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• Terminals are Nickel plated for excellent signal transfer

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List price $279.99
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Available Offers (2) for Kicker KMPK4 (47KMPK4)
15% off an NVX XCAP10H w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP10H Capacitor! No code needed — discount applies automatically at checkout.
15% off an NVX XCAP1F w/ Select Amp Kits Add a qualifying amplifier to your cart and save 15% on the NVX XCAP1F Capacitor! No code needed — discount applies automatically at checkout.

• 4 gauge Power Amplifier Installation Kit
• Made from OFC (100% Oxygen-Free Copper)
• Terminals are Nickel plated for excellent signal transfer

T-Spec V8-AK1

V8 Series 1/0 AWG Amplifier Wiring Kit

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V8 Series 1/0 AWG Amplifier Wiring Kit

• Fuse Holder Type: Mini ANL
• Wire Material: OFC (Oxygen-Free Copper)
• High strand count for maximum flexibility
• BC-5W2 marine compliant RCA
• Developed with modern technology and innovation

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• Fuse Holder Type: Mini ANL
• Wire Material: OFC (Oxygen-Free Copper)
• High strand count for maximum flexibility
• BC-5W2 marine compliant RCA
• Developed with modern technology and innovation

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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

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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

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List price $629.99
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• 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

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Kicker VK8 (47VK8)

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

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

• 8 gauge Complete Amplifier Installation Kit
• Designed specifically for car audio systems up to 600 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

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List price $79.99
-34% $52.95

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NVX XCAP1F

$109.99

$93.49

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Add to cart

• 8 gauge Complete Amplifier Installation Kit
• Designed specifically for car audio systems up to 600 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

JL Audio XD-ACS30

Amplifier Connection Kit, 30 A capacity, Single Amplifier

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Amplifier Connection Kit, 30 A capacity, Single Amplifier

• 17 ft (5.18 m) Red 30A Core Power Wire, terminated with ring
• 3 ft (0.91 m) Black 30A Core Ground Wire, terminated with ring
• 17 ft (5.18 m) Blue Remote Turn-On Lead Wire
• 25 ft (7.62 m) Blue Speaker Cable

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• 17 ft (5.18 m) Red 30A Core Power Wire, terminated with ring
• 3 ft (0.91 m) Black 30A Core Ground Wire, terminated with ring
• 17 ft (5.18 m) Blue Remote Turn-On Lead Wire
• 25 ft (7.62 m) Blue Speaker Cable

Stinger SK141

100A 4-Gauge Amplifier Power Wiring Kit with Stinger SPD5801 Mini-ANL Fuse Holder

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100A 4-Gauge Amplifier Power Wiring Kit with Stinger SPD5801 Mini-ANL Fuse Holder

• 4 gauge Power Amplifier Installation Kit
• Designed specifically for car audio systems up to 1000 watts
Stinger SPD5801 waterproof mini-ANL fuse holder included

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    FAQ for Universal-Fit Audio & Electronics in 1988 90

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1988 Audi 90?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your 90.

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

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