Nilight 50224A 6-Way Fuse Relay Block with ACC Control, 12–24V
Product description
Adding lights or other electrical accessories to a car, RV, boat, or off-road vehicle is easier to organize when each accessory has its own protected circuit. The Nilight 50224A combines a six-way fuse block with built-in relays and an ACC interface, bringing those connections together in one panel-mounted unit.
The ACC control is designed to cut power when the vehicle key is turned off. LED indicators help you check circuit status, while the negative bus and screw terminals give wiring a defined place to connect.

Usage tips
Plan which accessory belongs on each of the six circuits before wiring, then use the included label stickers to mark them. This makes it simpler to identify the relevant fuse when checking or replacing one later. The block is intended for 12–24V DC vehicle electrical systems, including cars, motorcycles, boats, trucks, trailers, buses, and RVs.



Mount the block on a panel and connect the circuits using its screw terminals. The ACC interface is useful for accessories that should switch off with the ignition. When the blue indicator is lit, the circuit is powered, a red light indicates a blown or disconnected fuse. The cover has a push-latch design and helps shield the fuses from dust and splashes. Keep the unit out of direct rain during use.
Tech specs

- Type: 6-way blade fuse block with integrated relays and ACC control
- Model: 50224A
- Voltage: 12–24V DC
- Maximum total input current: 80A
- Maximum single output current: 20A
- Material: ABS plastic
- Dimensions: 3.5 in. W x 1.1 in. H
- Mounting: Panel mount
- Indicators: Blue power and red fuse-status LEDs
- Included: Fuse relay block, label stickers, installation screws, and additional blade fuses
Why it makes sense



A separate fuse panel and individual relays can mean more components to position and connect. This unit integrates six relays into the fuse block, so it offers a consolidated way to distribute power to multiple accessories. Each circuit is fused independently: if a fault causes a fuse to blow, the interruption is limited to that circuit, leaving other circuits unaffected.
For a practical installation, a vehicle owner adding auxiliary lights can assign them to separate circuits, label each connection, and use the indicator lights to check circuit status. The ACC connection also suits accessories intended to lose power when the ignition is off. The transparent cover keeps the fuse area visible while providing added protection against dust and splashes.

Customer feedback is mixed on functionality and wiring: some buyers say the block works well and helps with accessory installation, while others report power or wiring difficulties. Its integrated-relay design is appreciated by some and less intuitive for others. These experiences make careful circuit planning and following the vehicle’s wiring requirements important parts of an installation.
Before you decide



What does the ACC connection do? It provides ignition-linked control, designed to cut power when the vehicle key is turned off. This is useful for circuits that should not remain powered with the vehicle off.
How can I tell whether a circuit is powered or needs attention? The blue LED indicates that a circuit is powered. A red LED indicates that its fuse is blown or disconnected, helping you locate the circuit to inspect.
What vehicles can use this fuse block? It is designed for 12–24V DC applications and is listed for cars, motorcycles, boats, trucks, trailers, buses, RVs, and other vehicle types. Match the installation to the vehicle’s electrical system and the current requirements of the connected accessories.
Is it worth it?
The Nilight 50224A is suited to vehicle owners who want six fused accessory circuits, integrated relays, ignition-linked ACC control, and visible circuit indicators in a single panel-mounted block. Its combination of circuit organization and status LEDs makes it a practical fit for planned accessory wiring in compatible 12–24V DC vehicles.
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