Description
Automotive Relay Panels by MGI SpeedWareuse our interactive builder to customize your multi-relay control panel
Pre-Wired Relay Box with Built-In Fuses
An MGI relay box can control high-current car accessories that regular switches can’t handle. Have electric motors, spotlights, or high-current resistive loads? A relay box will do the trick. Comes with fused relays, a main fuse, and main feeder conductor.
Features
- Lightweight and compact aluminum construction
- No messy wiring — the SPST relays are pre-wired and ready to go
- Every individual relay allows for negative switching
- Proudly designed and assembled in North America
FUSED RELAYS WITH LEDS
Innovative relays with built-in fuses greatly reduces the amount of wiring needed. SPST relays are rated 40A at 12vDC, with smart LED fuses that glow when blown. What’s more, each relay and fuse can be easily replaced if needed.
EASY-TO-WIRE SCREW TERMINALS
High-quality barrier screw terminals makes wiring quick and easy, especially with fork / spade connectors. Each screw is clearly numbered – simply use the included wiring diagram to make your connections.
PRE-WIRED AND READY TO USE
MGI SpeedWare relay boxes are designed to reduce custom wiring as much as possible – that’s why our boxes are pre-wired and ready to go. All you need to do is connect a power source, switches and loads to the appropriate screw terminal.
Modular Relay Panel Wiring Diagramshow to install 3, 4, 6, and 8 relay modules
STEP 1
Battery Power
Connect the red main feeder conductor to the car starter’s battery power terminal. Then, install the supplied main fuse and holder in the main feeder conductor between the starter and the power stud found inside the panel.
STEP 2
Switches & Grounds
Install a ground wire between the relay panel and the auto chassis. Then, connect the control circuit terminal to your switch inputs, with switch outputs connected to the appropriate screw terminals.
STEP 3
Outgoing loads
Connect your loads to the appropriate screw terminals. Ground your loads. See the 3, 4, 6, and 8 relay module diagrams above.
FREQUENTLY ASKED QUESTIONSAnswers to Popular questions
Why buy a fuse & relay panel?
When rebuilding, restoring, or refurbishing your vehicle, you’re bound to need electric pumps, fans, spotlights and more. These high-current devices will damage regular ignition key switches or low-current switch panels — however, an electromagnetic switching relay panel will give you the safe and reliable control you need.
Can this relay box operate “normally closed” devices?
No. Our SPST relay boxes are designed for standard normally open (N.O.) loads only. However, our specialty SPDT Bosch style relay boxes can power devices that are normally closed.
WIRING EXAMPLESsome popular relay panel projects
Negative Switching
Some devices are designed specifically for negative ground switching. With our SPST relay panels, every individual relay allows for negative switching. Simply connect your switch between the appropriate ground terminal and chassis. Note: switches with LEDs will not function properly with negative switching.
Switches
Switch Panels
Fuse Boxes
Wire Loom
Battery Cable
Primary Wire
Blade Fuses
MIDI Fuses
Crimp Terminals
Keith Conner (store manager) –
Made my life alot easier wiring spotlights on my truck. Saved me the hassle of wiring relays all over the place.
paisleyrowley (store manager) –
works like a charm. glad its made of metal.
Kelsi (store manager) –
Great price and comes with everything you need. This kit came with everything I needed and was easy to install.
carlton.calhoun122 (store manager) –
thumbs up
Don Knight (verified owner) –
MARCUS WATSON (verified owner) –
Joseph S. (verified owner) –
Just what I need to run my fuel pump and fan on my 1952 Ford F1
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Dustin (verified owner) –
The relay box was great but the weatherproof box that was supposed to come with it never came. The fuses included don’t stay in well.
William Peters (verified owner) –
Made the mistake of going with a plastic relay kit first, than saw this. Well made, durable, the exact thing you would do if you built it yourself. Thought out and built with quality. If you are doing a Sniper (or similar)EFI, use this, one for the fan and the other two for the ignition hot wires.
Brent H. (verified owner) –
Working well so far.
1954 chevy truck resto..
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