---
product_id: 54376074
title: "Gebildet 2pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Built-in Diode for Automotive Truck Van Motorcycle Boat"
brand: "gebildet"
price: "S/.99"
currency: PEN
in_stock: true
reviews_count: 13
category: "Gebildet"
url: https://www.desertcart.pe/products/54376074-gebildet-2pcs-jd1912-car-relay-harness-12v-40a-4-pin
store_origin: PE
region: Peru
---

# 40A high load capacity 12V standard automotive voltage 15ms ultra-fast switching Gebildet 2pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Built-in Diode for Automotive Truck Van Motorcycle Boat

**Brand:** gebildet
**Price:** S/.99
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your ride with precision and protection!

## Quick Answers

- **What is this?** Gebildet 2pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Built-in Diode for Automotive Truck Van Motorcycle Boat by gebildet
- **How much does it cost?** S/.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/54376074-gebildet-2pcs-jd1912-car-relay-harness-12v-40a-4-pin)

## Best For

- gebildet enthusiasts

## Why This Product

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

## Key Features

- • **Endurance You Can Trust:** Rated for 100,000 electrical and 10 million mechanical operations—built to outlast your toughest drives.
- • **Robust 40A Load Handling:** Handles heavy-duty automotive, truck, and motorcycle electrical demands without breaking a sweat.
- • **Built-in Diode Protection:** Safeguards your vehicle’s electronics from voltage spikes, ensuring longevity and reliability.
- • **Plug & Play Compatibility:** Seamlessly fits all 12V DC systems with 4-pin SPST design, making upgrades and replacements hassle-free.
- • **Precision Silver Alloy Contacts:** Ultra-low contact resistance (≤100mΩ) for efficient, stable current flow and minimal power loss.

## Overview

The Gebildet JD1912 12V 40A 4-pin relay harness combines high durability with advanced built-in diode protection, delivering fast 15ms switching and ultra-low contact resistance. Designed for automotive, truck, motorcycle, and boat applications, it supports heavy electrical loads while ensuring long-lasting performance and easy installation across all 12V DC systems.

## Description

Interchangeable / Compatible with: All cars and devices equipped with a 12 volt DC power source. Relay Technical Specification Relay load: 40 A/12 VDC. Contact resistance: ≤ 100 MΩ. Contact material: AG alloy. Life Expectancy Electrical: 100,000 Operations Life Expectancy Mechanical: 10,000,000 operations(at 300 operations/min) Coil power: 1.8 W. Operate time: 15 ms. Release time: 10 ms. Initial withstand voltage of contact and contact: 1000VAC/1min. Initial withstand voltage of contact and coil: 1500VAC/1min. Insulation resistance: 100 MΩ/(500 VDC). Temperature range: -55°C ~ +70°C. Humidity range: 35% ~ 80%. Atmospheric Pressure:86~106KPa. Operation target: Create value for our customers is our responsibility, quality products and sincere service is our eternal pursuit Customer service: Customer satisfaction is our greatest pursuit if you found that our products do not work or not as good quality as you think, Please contact us without hesitation.

Review: Essential equipment. - Arrived on time. Easy to fit. Good value for money. Appears to be good quality.
Review: Easy installation - Working well. I used it to replace a faulty motor control board on an 18v Ryobi lawnmower. The harness and the length of the leads made for easy installation.

## Features

- Integrated Diode: Each relay includes a built-in diode that suppresses induced voltage during switching, safeguarding your electrical components from potential damage.
- Rated operational voltage: 12V/ Switching Capability: 40A
- Minimum operating voltage 8V, corresponding minimum operating current is 100mA; Standard operating voltage 12V, corresponding standard operating current is 150mA.
- Small size/Low power consumption/High contact voltage/ High sensitivity
- Contact Material: Ag Alloy / Contact Resistance: ≤ 100MΩ. Life Expectancy Electrical: 100,000 Operation, Life Expectancy Mechanical: 10,000,000 Operation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0778DYRLR |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 1,482 in Automotive ( See Top 100 in Automotive ) 2 in Car Relays |
| Colour | 4 pins |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,662) |
| Date First Available | 8 Nov. 2017 |
| Item Package Quantity | 1 |
| Item Weight | 120 g |
| Item model number | DE079 |
| Manufacturer | Gebildet |
| Package Dimensions | 22.5 x 6.8 x 3.3 cm; 120 g |
| Part number | DE079 |
| Plug profile | DIN Rail Mount |
| Specification met | CE, RoHS |
| Style | JD1912-12V/4pin with wire plug |
| Wattage | 1.8 watts |

## Product Details

- **Connector type:** Quick Connect
- **Contact material:** Silver Alloy
- **Contact type:** Normally Open
- **Current rating:** 40 Amps
- **Mounting type:** DIN Rail Mount

## Images

![Gebildet 2pcs JD1912 Car Relay Harness 12V 40A 4 Pin SPST 12AWG Harness Sockets with Built-in Diode for Automotive Truck Van Motorcycle Boat - Image 1](https://m.media-amazon.com/images/I/516oU5co43L.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Essential equipment.
*by S***W on 7 December 2025*

Arrived on time. Easy to fit. Good value for money. Appears to be good quality.

### ⭐⭐⭐⭐⭐ Easy installation
*by L***E on 15 June 2025*

Working well. I used it to replace a faulty motor control board on an 18v Ryobi lawnmower. The harness and the length of the leads made for easy installation.

### ⭐⭐⭐⭐⭐ Pre wired for easy installation.
*by N***E on 2 December 2025*

Excellent product. Just what I needed for the electrics on my motor home.

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-16*