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1990 Cadillac Eldorado

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 1990 Cadillac Eldorado

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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Metra MPS-RGBC-4

Water-Resistant RGB LED Controller for MPS-RGBWWS4

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Water-Resistant RGB LED Controller for MPS-RGBWWS4

• Water-resistant RGB LED Controller
• Designed in tandem with RGB MPS app
• Select from 10 speeds and 20 modes
• Sync LED to your music via Smartphone Bluetooth feature
• Compatible with MPS-RGBWWS4 (Sold separately)

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List price $73.99
-11% $65.99

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Only 2 Left!

Metra 44-EC6R Antenna Extension

6" Universal Antenna Extension Cable with Right Angle Male

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6" Universal Antenna Extension Cable with Right Angle Male

• Universal Antenna Extender
• Extends Antenna 6" (.5 ft.)
• Right Angle Male Connector

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List price $15.99
-38% $9.99

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• Universal Antenna Extender
• Extends Antenna 6" (.5 ft.)
• Right Angle Male Connector

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Metra 89-50-0900

Universal Trim Rings

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Universal Trim Rings

• Universal Double-DIN trim rings
• For Double-DIN radio installations

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List price $27.99
-54% $12.99

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• Universal Double-DIN trim rings
• For Double-DIN radio installations

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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List price $13.99
-57% $5.99

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

Metra 82-4400

1/2" Universal 6.5" to 6.75" Plastic Speaker Spacer Rings

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1/2" Universal 6.5" to 6.75" Plastic Speaker Spacer Rings

• Works with Most 5-1/4" Speakers
• Factory Style Finishes
• Heavy Duty ABS Plastic
• Works with 6" to 6.5" Speakers

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• Works with Most 5-1/4" Speakers
• Factory Style Finishes
• Heavy Duty ABS Plastic
• Works with 6" to 6.5" Speakers

Metra 44-EC18 Antenna Extension

18" Universal Antenna Extension Cable

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18" Universal Antenna Extension Cable

Universal Antenna Extender • Extends Antenna 18" (1.5 ft.)

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List price $11.99
-17% $9.99

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Universal Antenna Extender • Extends Antenna 18" (1.5 ft.)

Metra 40-UV43 Antenna Adapter

Connect your factory antenna to a new aftermarket radio

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Connect your factory antenna to a new aftermarket radio

• Antenna Adapter for Vehicles with Two Antennas
• 1 Male to 2 Female

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List price $16.99
-18% $13.99

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• Antenna Adapter for Vehicles with Two Antennas
• 1 Male to 2 Female

Metra 99-9000

Universal Underdash Stereo Installation Enclosure

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Universal Underdash Stereo Installation Enclosure

• Universal Underdash CD Housing
• Premium underdash housing fully encloses the unit
• Quick conversion from 2-Shaft to DIN
• High-grade ABS Plastic

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List price $33.99
-12% $29.99

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• Universal Underdash CD Housing
• Premium underdash housing fully encloses the unit
• Quick conversion from 2-Shaft to DIN
• High-grade ABS Plastic

Metra IBWRD88

Dual 8-Gauge to 8-Gauge Input Wire Reducers

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Dual 8-Gauge to 8-Gauge Input Wire Reducers

• Dual 8-gauge input and output to 8-gauge wire reducer
• Machined brass construction with Chrome finish
• Designed for aftermarket audio upgrades in any vehicle

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List price $24.99
-12% $21.99

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• Dual 8-gauge input and output to 8-gauge wire reducer
• Machined brass construction with Chrome finish
• Designed for aftermarket audio upgrades in any vehicle

Metra IBWRD00

Dual 1/0-Gauge to Single 1/0 Gauge Input Wire Reducers

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Dual 1/0-Gauge to Single 1/0 Gauge Input Wire Reducers

• Dual 1/0-gauge input and output to 1/0-gauge wire reducer
• Machined brass construction with Chrome finish
• Designed for aftermarket audio upgrades in any vehicle

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List price $49.99
-10% $44.99

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• Dual 1/0-gauge input and output to 1/0-gauge wire reducer
• Machined brass construction with Chrome finish
• Designed for aftermarket audio upgrades in any vehicle

Metra 44-EC36 Antenna Extension

36" Universal Antenna Extension Cable

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36" Universal Antenna Extension Cable

• 36" (91cm) Universal extension cable
• Contains impedance matching capacitors

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• 36" (91cm) Universal extension cable
• Contains impedance matching capacitors

Metra 44-UA42 Antenna

Shark Fin Style Roof Mount Universal Amplified AM/FM Antenna

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Shark Fin Style Roof Mount Universal Amplified AM/FM Antenna

• Roof Mount Amplified Antenna
• Shark fin design for sleek installation
• Color: Black

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List price $166.99
-40% $99.99

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Only 3 Left!

• Roof Mount Amplified Antenna
• Shark fin design for sleek installation
• Color: Black

Metra MPS-ECRGB36

36" RGB LED Extension with RGB-CB2

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36" RGB LED Extension with RGB-CB2

• 36" RGBW LED wire extension
• Male micro-DIN 5-pin and female micro-DIN 5-pin connectors
• Designed for use with Metra RGBW-CB2 (Sold separately)

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List price $9.99
-10% $8.99

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• 36" RGBW LED wire extension
• Male micro-DIN 5-pin and female micro-DIN 5-pin connectors
• Designed for use with Metra RGBW-CB2 (Sold separately)

Metra 44-EC204 Antenna Extension

204" Universal Antenna Extension Cable

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204" Universal Antenna Extension Cable

• Universal Antenna Extender • Extends Antenna 204" (17 ft.)

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List price $21.99
-55% $9.99

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• Universal Antenna Extender • Extends Antenna 204" (17 ft.)

Metra RGB-PT2

6" 5-pin RGB Pigtail Harness for RGB-CB2

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6" 5-pin RGB Pigtail Harness for RGB-CB2

• 6" 4-pin RGBW hardwire pigtail adapter
• Designed for use with Metra RGB-CB2 (Sold separately)

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1
List price $6.99
-14% $5.99

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• 6" 4-pin RGBW hardwire pigtail adapter
• Designed for use with Metra RGB-CB2 (Sold separately)

Metra MPS-UNDG-KT1

6 LED Tube Universal Underglow Chase Kit for UTV, ATV, and Golfcart

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6 LED Tube Universal Underglow Chase Kit for UTV, ATV, and Golfcart

• Underglow Chase Kit UTV, ATV, Golfcart
• Includes 6 sealed LED tubes, mounting hardware, and connect chasing controller
• Water-resistant Heise connector
• Includes Pro Controller, RF card remote

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List price $318.99
-10% $286.99

In stock.

• Underglow Chase Kit UTV, ATV, Golfcart
• Includes 6 sealed LED tubes, mounting hardware, and connect chasing controller
• Water-resistant Heise connector
• Includes Pro Controller, RF card remote

Metra 44-UL09 Antenna

Universal Retractable Top-Mount Antenna

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Universal Retractable Top-Mount Antenna

• Retractable Top Mount Retractable Antenna
• 31" 4-Section Retractable Mast

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List price $44.99
-44% $24.99

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• Retractable Top Mount Retractable Antenna
• 31" 4-Section Retractable Mast

Metra 82-4301

Universal 1" Speaker Spacer Rings for 6" to 6-3/4"

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Universal 1" Speaker Spacer Rings for 6" to 6-3/4"

• Universal 1" Speaker Spacer Rings for 6" to 6.75" Aftermarket Car Speakers
• Color: Black
• High Grade ABS Plastic Construction
• Factory Matched Texture Style

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List price $29.99
-50% $14.99

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Ships in 10-14 days

• Universal 1" Speaker Spacer Rings for 6" to 6.75" Aftermarket Car Speakers
• Color: Black
• High Grade ABS Plastic Construction
• Factory Matched Texture Style

Metra 82-4203

6" - 6.75" Universal Speaker Adapter

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6" - 6.75" Universal Speaker Adapter

• Universal Speaker Adapters
• installation of 6 to 6.75 inch speakers
• Sold as Pair

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List price $33.99
-53% $15.99

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Only 3 Left!

• Universal Speaker Adapters
• installation of 6 to 6.75 inch speakers
• Sold as Pair

iBeam TE-DVR-PS

Water Resistant Dual-Camera Dash Cam and DVR

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Water Resistant Dual-Camera Dash Cam and DVR

• Dual-channel FHD camera and built-in DVR
• 150-degree viewing angle
• 6G SONY camera lens
• Surface or flush mounting options for cameras
• 5 foot of cable at each camera
• G-Sensor to prevent overwriting video recordings in the event of a collision

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$243.99

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• Dual-channel FHD camera and built-in DVR
• 150-degree viewing angle
• 6G SONY camera lens
• Surface or flush mounting options for cameras
• 5 foot of cable at each camera
• G-Sensor to prevent overwriting video recordings in the event of a collision

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    FAQ for Universal-Fit Audio & Electronics in 1990 Eldorado

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1990 Cadillac Eldorado?

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

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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
    • 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.