
Easily manage and control your 12V accessories with the MB Quart GMR-RB4 4-Circuit 20 Amp Relay Bank, designed for seamless integration and simple setup. Built for use with the GMR7V1 Source Unit (sold separately), this relay bank delivers powerful plug-and-play capability, giving users full digital control of up to four separate 12V circuits. Ideal for marine, off-road, or custom vehicle applications, the GMR-RB4 offers a reliable and professional-grade solution for powering lights, pumps, fans, or any other 12V accessory with ease.Installation is straightforward with a simple three-wire connection. Just plug the included male JST connector into the GMR7V1’s ‘AUX TRIGGER’ port, then provide 12V power and ground via an 8 AWG wire (80A fuse required on the power wire). Each of the four independent circuits supports up to 20 amps max, offering plenty of power for a wide range of devices. Connecting accessories is quick, with clearly labeled terminals and simple 12V power/ground wiring.What sets the GMR-RB4 apart is its built-in LED fuse indicators—a glowing red light instantly identifies a blown fuse while the circuit is still loaded, taking the guesswork out of troubleshooting and ensuring quick, hassle-free maintenance. Whether you're adding off-road lights, air compressors, or audio components, the GMR-RB4 is your all-in-one solution for safe, clean, and efficient 12V power distribution. Get total control and a streamlined installation with the MB Quart GMR-RB4 Relay Bank—built for performance and engineered for simplicity.

Easily manage and control your 12V accessories with the MB Quart GMR-RB4 4-Circuit 20 Amp Relay Bank, designed for seamless integration and simple setup. Built for use with the GMR7V1 Source Unit (sold separately), this relay bank delivers powerful plug-and-play capability, giving users full digital control of up to four separate 12V circuits. Ideal for marine, off-road, or custom vehicle applications, the GMR-RB4 offers a reliable and professional-grade solution for powering lights, pumps, fans, or any other 12V accessory with ease.Installation is straightforward with a simple three-wire connection. Just plug the included male JST connector into the GMR7V1’s ‘AUX TRIGGER’ port, then provide 12V power and ground via an 8 AWG wire (80A fuse required on the power wire). Each of the four independent circuits supports up to 20 amps max, offering plenty of power for a wide range of devices. Connecting accessories is quick, with clearly labeled terminals and simple 12V power/ground wiring.What sets the GMR-RB4 apart is its built-in LED fuse indicators—a glowing red light instantly identifies a blown fuse while the circuit is still loaded, taking the guesswork out of troubleshooting and ensuring quick, hassle-free maintenance. Whether you're adding off-road lights, air compressors, or audio components, the GMR-RB4 is your all-in-one solution for safe, clean, and efficient 12V power distribution. Get total control and a streamlined installation with the MB Quart GMR-RB4 Relay Bank—built for performance and engineered for simplicity.

The Pioneer GM-DX874 four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers for powerful music. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out of the way spaces. The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback. Pioneer uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance. Speaker-level inputs allow you to install this amp in a factory system with no RCA connections. The amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, whether you're driving speakers or subs.

The Kenwood DMX5710S is an in-car entertainment featuring a double-DIN size and compact chassis design for easy installation on most vehicle dashboards. A wide 6.8-inch capacitive touchscreen offers a high-resolution WSVGA display (1024x600 pixels), glare-resistance, and anti-finger print coating for the finest visual clarity. Wireless smartphone integration via Apple CarPlay or Android Auto ensures voice control, and also offers third-party apps such as Google Maps and Waze for enhanced driver safety and convenience. It features a 50W x 4 amplifier; independent 13-band equalizer for the most flexible sound profile; advanced digital time alignment for the best sound stage; multi-format audio support, inclusive of MP3, FLAC, and more. For Connectivity, it offers rear USB, Bluetooth for audio streaming and hands-free operation, FM/AM tuner with RBDS. The SiriusXM Connect Vehicle Tuner connects directly and provides satellite radio. The receiver is equipped with rear view camera input, guidelines, and auto-dim sensing. Added to that, it has Customizable UI options, iPhone and Android Compatibility, and USB Mirroring. It also features support for iDatalink Maestro that provides advanced vehicle integration. From new technology connectivity and audio customization, including safety features, DMX5710S does provide an upgrade in quality to car stereos.

The KENWOOD DMX4710S features a 6.8" capacitive touch screen with 1024x600 WSVGA resolution. It supports wired Apple CarPlay and Android Auto for seamless smartphone integration. With iDatalink Maestro compatibility and a Double Din design, it offers easy installation and fits more vehicles.
| Pros for MB Quart - 4 Circuit 20A Relay Bank with Plug & Play Capability for 12V Circuits - Black | |||
|---|---|---|---|
| There were no pros for this product— | Sound Quality, Power, Installation Ease, Size | Overall Performance, Wireless CarPlay | Sound Quality, Ease of Use, Connectivity, Features |
| Cons for MB Quart - 4 Circuit 20A Relay Bank with Plug & Play Capability for 12V Circuits - Black | |||
| There were no cons for this product— | Heat Dissipation | Screen Brightness, Audio Quality | Volume Control, Screen Visibility |
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