Garage
Shop

See all parts that fit your 1990 Integra

MB Quart GMR-RB4

Universal 4 Circuit Add-on Relay Bank for GMR7V1 Source Unit

MB Quart
Shop all MB Quart
highlight-star-icon

• Universal 4 circuit relay bank
• Plug and play connection
• Control any switchable 12V accessory
• LED indicates a blown fuse

Learn more about the gmrrb4
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
List price $159.99
Thanks , You Pay:
-6%

$149.99

 with warranty
Starting at $14/mo or 4 payments of $38 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Dollar Icon
VIP Product Get $15.00 in rewards to spend later
Quantity
Available: Ships in 10-14 days
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

Limited time!
46CSS654 main

Kicker CSS65 (46CSS654)

600W Peak (200W RMS) 6.5" CS Series 2 Way Component 4-ohm Speaker System

9
-28.02%

$143.96

List price $199.99

Limited time!
CS-DF620 main

JVC CS-DF620

600W Peak (50W RMS) 6.5" DRVN DF Series 2-Way 4-ohm Shallow-Mount Coaxial Car Speakers

4
-39.08%

$38.99

List price $64.00

JBL Stage2 634 (STAGE2634)

500W Peak (80W RMS) 6.5" Stage2 Series 3 Way Coaxial 4-ohm Speakers

15
-26.00%

$73.99

List price $99.99

JBL Stage1 621 (STAGE1621)

350W Peak (70W RMS) 6.5" Stage1 Series 2 Way Coaxial 4-ohm Speakers

5
-50.05%

$49.95

List price $99.99

Description


MB Quart brand icon

Authorized dealer

Product Features:

  • 4 circuit relay bank for the MB Quart GMR-7V1 source unit (unit sold separately)
  • Compatible with most vehicles (universal)
  • Plug and play wiring connectors
  • Easily add, wire, and control switchable 12v accessories
  • Connect relay bank to source unit via male JST to female JST on unit's labeled 'AUX TRIGGER'
  • Provide 12V power/ground to the GMR-RB4 via 8 AWG wire with 80A fuse on the 12V+ wire
  • Add12V accessories to each 20A (max) circuit via 12V power and ground connection
  • LED indicator shows which fuse is blown
  • Includes 12v- and 12v+ Battery Connector 8awg wire with 80amp fuse
  • Includes 20-Amp Fuse Per Channel with blown fuse indicator LED
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

124
-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

3
-19.05%

$339.99

List price $420.00

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

SXE-6926S main

Alpine SXE-6926S

280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers

13
-20.84%

$56.99

List price $71.99

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99


Best selling similar products

BIR500 small

NVX BIR500

• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range

(36)

$79.99

List price $95.99

SGP35 small

Stinger SGP35

• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Ideal for 2nd Audio Battery Isolation from Vehicle Systems
• 500A Constant/ 900A Peak

(1)

$117.99

List price $379.00

LL-IR500A small

Limitless Lithium LL-IR500A

• 500-amp Relay and Battery Isolator
• High current isolation relay designed for adding a secondary battery
• Prevents primary battery discharge when the vehicle engine is off
• Maximum Contact Rating: 500 amps
• Mechanical Life Cycle: 100000

$79.00

List price $79.00

XSBI200 small

NVX XSBI200

• 200-Amp continuous / 300-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

(6)

$49.99

List price $79.99

BIR200 small

NVX BIR200

• 200-Amp continuous / 300-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range

(17)

$49.99

List price $59.99

SGP32 small

Stinger SGP32

• 200 amp Battery Isolator and Relay
• Prevents primary battery discharge
• Maximum current transfer
• Extends battery life
• Universal 12V Applications

(8)

$108.99

List price $229.00

IB500 small

The Install Bay IB500

• Battery Isolator and Relay
• 500 Amp
• Prevents Primary Battery Discharge
• Maximizes the Current Transfer
• Extends Battery Life
• Universal 12V Applications

(39)

$133.99

List price $148.99

BIR80 small

NVX BIR80

• 80-Amp continuous / 150-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

(10)

$15.99

List price $19.99

XSBI80 small

NVX XSBI80

• 80-Amp continuous / 150-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16.5V DC operating range

(2)

$24.99

List price $49.99

SGP38 small

Stinger SGP38

• 80 amp Battery Isolator and Relay
• Prevents Primary Battery Discharge
• Maximum Current Transfer
• Universal 12V Applications
• Extends Battery Life
• Water Resistant Black Phenolic Plastic
• 100,000 Mechanical Cycle Life

(5)

$31.99

List price $69.00

Specifications & Details


Battery Isolator Features
Width
2"
Height
4.19"
Isolator Type
Relay (Solenoid)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

GMR-RB4

Weight:

0.60lbs

Internal SKU:

gmrrb4

Internal Product ID:

210294

Customer Ratings & Reviews


MB Quart GMR-RB4 thumbnail image

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found

MIR-APL small

Crimestopper MIR-APL

Universal 4.3" LCD Rear View Mirror Monitor System with Adaptive Parking Lines

$219.95

List price $299.95

JiMS-225 small

Jensen JiMS-225

Universal iPod/iPhone Docking FM Radio Subwoofer Music System

$42.99

List price $84.99

70-7903L small

Metra 70-7903L

Install a New Car Stereo in select 2014-2020 3 and Yaris and Yaris iA

$24.99

List price $48.99

No picture

NVX VCW84v3RC

Recone Kit for VCW84v3 Version 3 Subwoofers

$69.99

List price $83.99

AW3000 small

Philips Fidelio A3 (AW3000)

Wireless Hi-Fi Speaker System

(1)

$80.98

List price $359.98

CLUB 82 small

JBL CLUB Marine 82

900W Peak (300W RMS) 8" Club Marine Series 2-way 4-ohm Coaxial Speakers with RGB LED lighting

$349.95

List price $399.95

ET-2105 small

Franklin ET-2105

5-Language European Translator

$19.99

List price $39.99

SV-9162 small

Crimestopper SV-9162

Replacement OEM-Style Mirror with 4.3" Digital Screen & Onstar Integration

(1)

$159.95

List price $279.95

2T8-1.2-BLACK small

Sonic Sub Box: 2T8-1.2 (Black)

Dual 8" Angled Universal Truck MDF Enclosure ( 2TRUCK8 )

$42.99

List price $69.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1990 Acura Integra

1990 Dodge Shadow

1996 GMC G3500

2013 Ford Explorer

2018 Ford Taurus

2003 Porsche Boxster

2007 Toyota Camry

2011 Nissan Quest

2009 Audi A5 Quattro

2008 Toyota Corolla

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

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.