---
product_id: 36985521
title: "EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2"
brand: "ehdis"
price: "99 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Ehdis"
url: https://www.desertcart.ro/products/36985521-ehdis-car-relay-4-pin-12v-40amp-spst-model-no
store_origin: RO
region: Romania
---

# 40A high current capacity 4-pin SPST design 0.01s ultra-fast switching EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2

**Brand:** ehdis
**Price:** 99 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride’s power game with EHDIS relays—fast, fierce, and fail-proof!

## Quick Answers

- **What is this?** EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2 by ehdis
- **How much does it cost?** 99 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/36985521-ehdis-car-relay-4-pin-12v-40amp-spst-model-no)

## Best For

- ehdis enthusiasts

## Why This Product

- Trusted ehdis brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Silver tin oxide contacts and 80°C temperature rating guarantee durability under pressure.
- • **Double the Reliability:** Pack of 2 means you’re always ready with a backup for seamless automotive performance.
- • **Plug & Play Simplicity:** 4-pin SPST relay design ensures quick, tool-free installation—no mechanic required.
- • **Power Through Anything:** Handles up to 40 amps effortlessly for your high-demand automotive needs.
- • **Lightning-Fast Response:** Switching time of just 0.01 seconds keeps your vehicle’s electrical system ultra-responsive.

## Overview

The EHDIS Car Relay 4 Pin 12V 40A SPST (Model JD2912-1H-12VDC) is a heavy-duty automotive relay designed for high current applications. Featuring a rapid 0.01-second switching time, silver tin oxide contacts for durability, and a robust 4-pin SPST configuration, this pack of two relays offers reliable, tool-free installation and long-lasting performance for all your vehicle’s electrical needs.

## Description

Buy EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2: Accessory Power - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Just what I needed ! - I used these EHDIS 4-pin relays to replace a failing one in my car’s lighting system, and they worked perfectly. Installation was quick — the pins matched up exactly, and the build quality feels solid for the price. They've handled 12V and 40A loads without any issues, even after extended use. Great little relays to keep on hand for auto projects or quick replacements
Review: Works for your needs - My Husband said, “The license plate light works on the jeep now!” So this does the job

## Features

- Heavy duty 4-prongs SPST relays, jd1912 12v 40a relay
- Use optional Relay Harness, or female Crimp Connectors
- High 40A coil capacity- able to handle those high current applications with ease
- Package Include: 2 x 40A 4-Pin 12V Vehicle Relays
- The Automotive relay is suitable for normal automobile use and simple to operate, you just need to connect the relay with the wire, no other tools needed, convenient for your use and replace, allowing your components to work properly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01J53IH5M |
| Best Sellers Rank | #26,103 in Automotive ( See Top 100 in Automotive ) #17 in Automotive Replacement Accessory Power Relays |
| Brand | EHDIS |
| Brand Name | EHDIS |
| Coil Voltage | 12 Volts |
| Connector Type | Crimp |
| Contact Current Rating | 40 Amps |
| Contact Material | Silver Tin Oxide |
| Contact Type | Normally Open |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 out of 5 stars 2,358 Reviews |
| Item Weight | 0.04 Kilograms |
| Manufacturer | Ehdis |
| Maximum Switching Current | 40 Amps |
| Maximum Switching Voltage | 12 Volts |
| Minimum Switching Voltage | 12 Volts (DC) |
| Operating Time | 0.01 Seconds |
| Operation Mode | Automatic |
| Specification Met | Ccee |
| UPC | 713653050390 |
| Upper Temperature Rating | 80 Degrees Celsius |
| Wattage | 1.8 watts |

## Product Details

- **Connector Type:** Crimp
- **Contact Material:** Silver Tin Oxide
- **Contact Type:** Normally Open
- **Current Rating:** 40 Amps
- **Brand:** EHDIS

## Images

![EHDIS Car Relay 4 Pin 12v 40amp Spst Model No.: JD2912-1H-12VDC 40A 14VDC, Auto Switches & Starters,Pack of 2 - Image 1](https://m.media-amazon.com/images/I/61gZPrPUM2L.jpg)

## Questions & Answers

**Q: Can this relay be no and nc ? or just no ?**
A: These are just standard relays. The circuit you are controlling is NO (no power) until a control signal is received.

**Q: Can this be used to replace the relay on aftermarket HID kits?**
A: i was wondering that too, and I did some checking and think they will,,, the relay on the HID kit is 12 v 40 amp, 4 pin, and they look the same, and looks like the specs are the same

**Q: Sirve para Ford econoline 3500 2014?**
A: Hi, this relay is universal for all kinds of vehicle. Please kindly know and choose your needed specification of this item.
Thank you.

**Q: What are the dimensions of the relay box, not including the mount or connections?**
A: Hi, please know the dimensions of the relay box is 1.1 x 1.2 x1 inch.
Thank you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed !
*by P***W on June 25, 2025*

I used these EHDIS 4-pin relays to replace a failing one in my car’s lighting system, and they worked perfectly. Installation was quick — the pins matched up exactly, and the build quality feels solid for the price. They've handled 12V and 40A loads without any issues, even after extended use. Great little relays to keep on hand for auto projects or quick replacements

### ⭐⭐⭐⭐⭐ Works for your needs
*by C***N on December 4, 2025*

My Husband said, “The license plate light works on the jeep now!” So this does the job

### ⭐⭐⭐⭐⭐ ⭐️⭐️⭐️⭐️⭐️
*by P***O on December 4, 2025*

Amazing product and excellent quality.

## Frequently Bought Together

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-25*