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1978 Cadillac DeVille

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 1978 Cadillac DeVille

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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Wet Sounds REV 10 HD XZ-B GRILLE

Grilles for Wet Sounds REV 10 Marine Tower Speakers (XZ Black)

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Grilles for Wet Sounds REV 10 Marine Tower Speakers (XZ Black)

• 10" XZ-style grilles for REV 10 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

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$145.00

Available

Ships in 10-14 days

• 10" XZ-style grilles for REV 10 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

Metra JP-1018

Lower Dash Mesh Grille Cut-Ins for Most 6.5" Speakers in 2018-2023 Vehicles from Jeep

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Lower Dash Mesh Grille Cut-Ins for Most 6.5" Speakers in 2018-2023 Vehicles from Jeep

• Fits most aftermarket 6.5" speakers into 4" factory openings
• Compatible with 2018-2023 vehicles from Jeep
• Constructed of injection-molded plastic
• Includes all necessary hardware
• Sold as a pair

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List price $194.99
-10% $174.99

In stock

Only 1 Left!

• Fits most aftermarket 6.5" speakers into 4" factory openings
• Compatible with 2018-2023 vehicles from Jeep
• Constructed of injection-molded plastic
• Includes all necessary hardware
• Sold as a pair

Wet Sounds REV 12 HD XW-W GRILLE

Grilles for Wet Sounds REV 12 Marine Tower Speakers (XW White)

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Grilles for Wet Sounds REV 12 Marine Tower Speakers (XW White)

• 12" XW-style grilles for REV 12 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

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$165.00

Available

Ships in 10-14 days

• 12" XW-style grilles for REV 12 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

Cerwin-Vega SM69FBB

Grilles for Cerwin Vega 6x9" RPM Stroker Speakers (Black)

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Grilles for Cerwin Vega 6x9" RPM Stroker Speakers (Black)

• 6x9" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM69F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

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List price $95.99
-17% $79.99

In stock

• 6x9" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM69F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

Cerwin-Vega GRL5VH

Mesh Grilles for Cerwin Vega 5.25" VEGA and HED Speakers

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Mesh Grilles for Cerwin Vega 5.25" VEGA and HED Speakers

• 5.25" VEGA or HED Speaker Mesh Grille
• Designed for VEGA or HED series speakers
• Metal mesh grilles with embossed logo
• Sold per pair / two grilles

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$39.99

In stock

Only 1 Left!

• 5.25" VEGA or HED Speaker Mesh Grille
• Designed for VEGA or HED series speakers
• Metal mesh grilles with embossed logo
• Sold per pair / two grilles

JL Audio M6-880SGI-S-Cm

Sport Grille Insert for JL Audio 8.8" M6 Marine Speakers (Cream)

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Sport Grille Insert for JL Audio 8.8" M6 Marine Speakers (Cream)

• 8.8" Cream speaker sport grille insert for M6 series marine speakers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

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$39.99

Available

Ships in 10-14 days

• 8.8" Cream speaker sport grille insert for M6 series marine speakers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required

DS18 PRO-GRILL8/BK

Universal Grille Covers for Most 8" Speakers (Black)

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Universal Grille Covers for Most 8" Speakers (Black)

• 8" universal speaker grill cover
• Fits speakers and midranges
• Simple and hassle-free attachment
• Made from drable PC/ABS
• Painted in in matte black
• Sold by pair

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List price $27.99
-18% $22.95

In stock

Only 2 Left!

• 8" universal speaker grill cover
• Fits speakers and midranges
• Simple and hassle-free attachment
• Made from drable PC/ABS
• Painted in in matte black
• Sold by pair

JL Audio M6-650SGI-S-An

Sport Grille Insert for JL Audio 6.5" M6 Marine Speakers (Anthracite)

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Sport Grille Insert for JL Audio 6.5" M6 Marine Speakers (Anthracite)

• 6.5" speaker sport grille insert for M6 series marine speakers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required
• Speaker grille primary color: Anthracite

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$34.99

Available

Ships in 10-14 days

• 6.5" speaker sport grille insert for M6 series marine speakers
• Ideal for marine or outdoor applications
• Easy to install and replace, no drilling required
• Speaker grille primary color: Anthracite

Rockford Fosgate Punch GF-4

Flush Mount Mesh Grilles for Rockford Fosgate 4" Punch V2 Speakers

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Flush Mount Mesh Grilles for Rockford Fosgate 4" Punch V2 Speakers

• 4" Punch V2 Flush Mount Speaker Mesh Grilles
• Designed for use in select Rockford Fosgate Punch V2 speakers
• Flush mount design for a seamless appearance
• Ideal for mounting low-profile speakers with shallow grilles

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$59.99

Available

Ships in 10-14 days

• 4" Punch V2 Flush Mount Speaker Mesh Grilles
• Designed for use in select Rockford Fosgate Punch V2 speakers
• Flush mount design for a seamless appearance
• Ideal for mounting low-profile speakers with shallow grilles

Rockford Fosgate Punch GF-525

Flush Mount Mesh Grilles for Rockford Fosgate 5.25" Punch V2 Speakers

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Flush Mount Mesh Grilles for Rockford Fosgate 5.25" Punch V2 Speakers

• 5.25" Punch V2 Flush Mount Speaker Mesh Grilles
• Designed for use in select Rockford Fosgate Punch V2 speakers
• Flush mount design for a seamless appearance
• Ideal for mounting low-profile speakers with shallow grilles

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$59.99

Available

Ships in 10-14 days

• 5.25" Punch V2 Flush Mount Speaker Mesh Grilles
• Designed for use in select Rockford Fosgate Punch V2 speakers
• Flush mount design for a seamless appearance
• Ideal for mounting low-profile speakers with shallow grilles

Cerwin-Vega FSWPG69

Universal Water-Resistant Mesh Grille for Most 6x9" Marine Speakers

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Universal Water-Resistant Mesh Grille for Most 6x9" Marine Speakers

• Pair of universal 6x9" water repellent speaker mesh grilles
• Features peel and stick adhesive application
• Made with Frogzskin woven polyester material
• Repels water, dirt and dust

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List price $119.99
-17% $99.99

In stock.

• Pair of universal 6x9" water repellent speaker mesh grilles
• Features peel and stick adhesive application
• Made with Frogzskin woven polyester material
• Repels water, dirt and dust

Wet Sounds REV 10 HD XW-B GRILLE

Grilles for Wet Sounds REV 10 Marine Tower Speakers (XW Black)

REV 10 HD XW-B GRILLE big
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Grilles for Wet Sounds REV 10 Marine Tower Speakers (XW Black)

• 10" XW-style grilles for REV 10 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

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

VIP Product Get $14.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

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$145.00

In stock

Only 2 Left!

• 10" XW-style grilles for REV 10 HD tower speakers
• Made with rugged plastic, able to withstand harsh conditions
• Includes (2) speaker grilles and (8) allen head screws

Diamond Audio MPG65

Mesh Grille for Diamond Audio 6.5" MP Speakers (Black)

MPG65 big
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Mesh Grille for Diamond Audio 6.5" MP Speakers (Black)

• Speaker Mesh Grille for 6.5" MP Series Speakers
• Great way to protect speakers from damage
• Stamped with Diamond Audio logo for custom look
• Made from metal with embossed logo and ABS plastic frame

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$29.99

Available

Ships in 10-14 days

• Speaker Mesh Grille for 6.5" MP Series Speakers
• Great way to protect speakers from damage
• Stamped with Diamond Audio logo for custom look
• Made from metal with embossed logo and ABS plastic frame

Metra SG8

Universal Mesh Grille for Most 8" Speakers and Subwoofers

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Universal Mesh Grille for Most 8" Speakers and Subwoofers

• Universal 8" Speaker and Subwoofer Grille
• Designed for high-excursion speakers and subwoofers
• Satin black powder-coated finish
• Mounting hardware included

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List price $32.99
-12% $28.99

Available

Ships in 10-14 days

• Universal 8" Speaker and Subwoofer Grille
• Designed for high-excursion speakers and subwoofers
• Satin black powder-coated finish
• Mounting hardware included

Wet Sounds REV 8 Translucent Grille

Translucent Grille for Wet Sounds REV8 8" Tower Speakers

REV 8 Translucent Grille big
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Translucent Grille for Wet Sounds REV8 8" Tower Speakers

• Translucent grille for Wet Sounds' REV 8 marine tower speakers
• Translucent and clear finish perfect for adding lights
• Grille includes stainless steel overlays for added durability

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$109.99

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Ships in 10-14 days

• Translucent grille for Wet Sounds' REV 8 marine tower speakers
• Translucent and clear finish perfect for adding lights
• Grille includes stainless steel overlays for added durability

SSV Works 190-WP-CGS-8B

Replacement Star Grille Inserts for SSV Works WP-A8 8" Marine Speakers (Blue)

190-WP-CGS-8B big
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Replacement Star Grille Inserts for SSV Works WP-A8 8" Marine Speakers (Blue)

• 8" Replacement Speaker Grilles for WP-A8
• Acoustically transparent mesh grilles
• Interchangeable color inserts for ultimate customization
• Color: Blue

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$15.99

In stock.

• 8" Replacement Speaker Grilles for WP-A8
• Acoustically transparent mesh grilles
• Interchangeable color inserts for ultimate customization
• Color: Blue

Earthquake Sound GRL-6

Mesh Grille for Earthquake Sound 6.5" EQ Speakers (Black)

GRL-6 big
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Mesh Grille for Earthquake Sound 6.5" EQ Speakers (Black)

• 6.5" Universal Car Speaker Mesh Grille
• Also fits 6.5" EQ series speakers
• Made with black mesh steel
• Sold per set (1 mesh grille and 1 mounting ring)

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$9.00

Available

Ships in 10-14 days

• 6.5" Universal Car Speaker Mesh Grille
• Also fits 6.5" EQ series speakers
• Made with black mesh steel
• Sold per set (1 mesh grille and 1 mounting ring)

Cerwin-Vega SM8FGB

Grilles for Cerwin Vega 8" RPM Stroker Marine Speakers (Black)

SM8FGB big
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Grilles for Cerwin Vega 8" RPM Stroker Marine Speakers (Black)

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

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 $95.99
-17% $79.99

Available

Ships in 10-14 days

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

Cerwin-Vega SM8FWW

Grilles for Cerwin Vega 8" RPM Stroker Speakers (White)

SM8FWW big
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Grilles for Cerwin Vega 8" RPM Stroker Speakers (White)

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

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

VIP Product Get $8.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $95.99
-17% $79.99

Available

Ships in 10-14 days

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

Cerwin-Vega SM8FBB

Grilles for Cerwin Vega 8" RPM Stroker Speakers (Black)

SM8FBB big
Go to item page Right Arrow Icon of Right Arrow

Grilles for Cerwin Vega 8" RPM Stroker Speakers (Black)

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

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

VIP Product Get $8.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $95.99
-17% $79.99

Available

Ships in 10-14 days

• 8" flush mount grilles for RPM Stroker speakers
• High gloss UV coated steel frame with powder coat
• Fits Cerwin Vega SM8F4 speakers
• Marine grade compliant speaker grilles
• Protects speakers from physical damage
• Sold as a pair (2 grilles included)

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    FAQ for Universal-Fit Audio & Electronics in 1978 DeVille

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1978 Cadillac DeVille?

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

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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.