Rated 4.85 out of 5 based on 13 customer ratings
(13 customer reviews)
$125.00 – $245.00 (USD)
Get ultimate control of your high-current devices. MGI’s most flexible modular relay panel is designed for easy installation. Can handle up to 20A resistive loads @ 12vDC, and up to 16A electric motor loads (fans and pumps).
- Pre-wired with 3, 4, 6, or 8 SPST relays rated 40A
- Built-in smart LED fuses that glow when blown
- Comes with main feeder and main fuse
- Easy to wire — Standard normally open (N.O.) operation
- Each individual relay can be wired for either positive or negative switching
find individual units sold on Amazon
SKU: RCPX-GEN3 Category: Full Panel Kit fuses Relays spst
Installation Manual RCP3RCP3 Wiring Diagram RCP4RCP4 Wiring Diagram RCP6RCP6 Wiring Diagram RCP8RCP8 Wiring Diagram
DimensionsSpecifications
- Description
- Dimensions
- Reviews (13)
Description
Automotive Relay Panels by MGI SpeedWare
use 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
- Can handle up to 20A resistive loads, and up to 16A electric motor loads (fans and pumps).
- 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
- #6 bolt-size screw terminals are labeled for easy wiring
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.
START CUSTOMIZING
Modular Relay Panel Wiring Diagrams
how 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 QUESTIONS
Answers 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 EXAMPLES
some 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.
More Accessories
Switches- Switch Panels
- Fuse Boxes
- Wire Loom
- Battery Cable
- Primary Wire
- Blade Fuses
- MIDI Fuses
- Crimp Terminals
SwitchesAll Accessories
Dimensions
Relay Box Specs
without feeder, fuses, and main fuse holder
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| 4 Relay Box — RCP3-GEN3 |
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| 4 Relay Box — RCP4-GEN3 |
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| 6 Relay Box — RCP6-GEN3 |
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| 8 Relay Box — RCP8-GEN3 |
13 reviews for Automotive Relay Panel SPST – All N.O. Contacts
Rated 5 out of 5
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.
Rated 5 out of 5
paisleyrowley (store manager) –
works like a charm. glad its made of metal.
Rated 5 out of 5
Kelsi (store manager) –
Great price and comes with everything you need. This kit came with everything I needed and was easy to install.
Rated 5 out of 5
carlton.calhoun122 (store manager) –
thumbs up
Rated 5 out of 5
Don Knight (verified owner) –
Rated 5 out of 5
MARCUS WATSON (verified owner) –
Rated 5 out of 5
Joseph S. (verified owner) –
Just what I need to run my fuel pump and fan on my 1952 Ford F1
Rated 3 out of 5
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.
Rated 5 out of 5
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.
Rated 5 out of 5
Brent H. (verified owner) –
Working well so far.
1954 chevy truck resto..Rated 5 out of 5
Brian Wagler (verified owner) –
Had no idea any thing like this existed, effortless hookup and very tidy.
I rewired a Star insulation blower powered by a Honda GX390 (Also a Canadian machine 😊). This particular piece of equipment is a heavy used item and has to be dependable as well as user friendly. MGI Speedware has both covered very well.
Would recommend this as a necessity in any industrial wiring applications.
Also customer service is very friendly and helpful👍🏽.Rated 5 out of 5
Rick Farber (verified owner) –
The item worked exactly as expected
Rated 5 out of 5
Earl (verified owner) –
I will be ordering again loved it
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Before finalizing your purchase
It is important to familiarize yourself with the MGI panel Installation Manual. Not only does this help you to select the appropriate options for your race panel, it will enable you to tackle any troubleshooting issues with confidence.
