--- 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: "114.84 DT" currency: TND in_stock: true reviews_count: 13 category: "Gebildet" url: https://www.desertcart.tn/products/54376074-gebildet-2pcs-jd1912-car-relay-harness-12v-40a-4-pin store_origin: TN region: Tunisia --- # 40A high current 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:** 114.84 DT **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?** 114.84 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 - • **Robust Durability:** Engineered for 100,000 electrical and 10 million mechanical operations—built to outlast your toughest drives. - • **Built-in Diode Protection:** Safeguards your vehicle’s electronics from voltage spikes, ensuring longevity and reliability. - • **Compact & Efficient Design:** Small footprint with low power consumption (1.8W) fits seamlessly into any automotive setup. - • **Universal 12V Compatibility:** Perfectly interchangeable with all 12V DC automotive, motorcycle, truck, and boat systems—never worry about fit. - • **Premium Silver Alloy Contacts:** Delivers ultra-low resistance (≤100mΩ) for efficient power transfer and minimal energy loss. ## Overview The Gebildet JD1912 Car Relay Harness is a high-performance 12V 40A 4-pin SPST relay with a built-in diode for voltage spike suppression. Featuring silver alloy contacts with ultra-low resistance and a rapid 15ms switching time, it guarantees reliable, long-lasting operation across automotive, motorcycle, truck, and boat applications. Compact, energy-efficient, and universally compatible, this relay harness is engineered to protect and enhance your vehicle’s electrical system with professional-grade durability. ## 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: 1 - Good product Review: Works well! - Works great, no issues at all. ## 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 | | Best Sellers Rank | 1,923 in Automotive ( See Top 100 in Automotive ) 3 in Car Relays | | Brand | Gebildet | | Coil Resistance | 100 Megaohms | | Coil Voltage | 12 Volts (DC) | | Connector Type | Quick Connect | | Connector type | Quick Connect | | Contact Current Rating | 40 Amps | | Contact Material | Silver Alloy | | Contact Type | Normally Open | | Contact material | Silver Alloy | | Contact type | Normally Open | | Country Of Origin | China | | Current Rating | 40 Amps | | Current rating | 40 Amps | | Customer Reviews | 4.7 out of 5 stars 1,653 Reviews | | Global Trade Identification Number | 01909074023207 | | Manufacturer | Gebildet | | Manufacturer Part Number | DE079 | | Minimum Switching Voltage | 8 Volts (DC) | | Model Number | DE079 | | Mounting Type | DIN Rail Mount | | Mounting type | DIN Rail Mount | | Operating Time | 15 Seconds | | Operation Mode | Manual | | Specification Met | CE, RoHS | | 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/51cknFngwxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 1 *by P***K on 5 March 2026* Good product ### ⭐⭐⭐⭐⭐ Works well! *by M***D on 24 April 2025* Works great, no issues at all. ### ⭐⭐⭐⭐⭐ Great value for money and pre-wired ease *by D***N on 22 November 2025* Great relays for the price, coming pre-wired with an optional holder made life much easier for installation too. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/54376074-gebildet-2pcs-jd1912-car-relay-harness-12v-40a-4-pin](https://www.desertcart.tn/products/54376074-gebildet-2pcs-jd1912-car-relay-harness-12v-40a-4-pin) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-09*