--- product_id: 155789201 title: "Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat" brand: "nilight" price: "S/.172" currency: PEN in_stock: true reviews_count: 13 category: "Nilight" url: https://www.desertcart.pe/products/155789201-nilight-5-pack-waterproof-relay-and-socket-harness-40-30 store_origin: PE region: Peru --- # 40A max switching current Waterproof & dustproof sealed design Heavy duty 12 AWG pure copper wiring Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat **Brand:** nilight **Price:** S/.172 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, stay unstoppable — the relay set that never quits! ## Quick Answers - **What is this?** Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat by nilight - **How much does it cost?** S/.172 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/155789201-nilight-5-pack-waterproof-relay-and-socket-harness-40-30) ## Best For - nilight enthusiasts ## Why This Product - Trusted nilight brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Heavy-duty tinned copper core wires ensure durability and longevity - • **Trusted by Pros:** Top-rated with 4.6 stars and proven reliability in heavy machinery - • **Weatherproof Warrior:** Sealed with premium caps and rings to conquer moisture and dust - • **Plug & Play Simplicity:** Direct replacement with no rewiring needed—install in minutes - • **Power Through Anything:** Handles up to 40 amps for robust automotive performance ## Overview The Nilight 5 Pack Waterproof Relay and Socket Harness features heavy-duty 12 AWG tinned copper wires and a 5-pin SPDT design, delivering up to 40 amps switching current at 12V DC. Engineered with a fully sealed waterproof and dustproof housing, these relays are built for automotive, marine, and industrial applications. With plug-and-play compatibility and a 2-year warranty, this set offers professional-grade reliability and durability trusted by mechanics and heavy equipment operators alike. ## Description Buy Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat: Battery Switches - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Good relays - Used one so far, works great. Review: Relays for Caterpillar Skid Steer - I was looking for less expensive relays for replacing relays on my CAT Skid Steer. These same relays are used for both engine starter relay and the glow plug relay on the skid steer. I paid about $37 for one relay at the CAT dealer, while this whole five pack of relays are way less than that. I was thinking these Nilight relays would be lower quality, but now I have a different opinion. I weighed the Nilight relay vs the well used, original CAT relay (sorry for the dirt and dust), and they were exactly the same. I tested one relay with a 9V battery, and they had a very solid, distinctive click when the relay contacts changed state. My ohmmeter confirmed the contacts changed state properly. I confirmed the CAT relay fit into the connector the same as the Nilight relay. It is a very tight fit, but that is due to the rubber gasket that prevents moisture intrusion. The icing on the cake is that these Nilight relays are a straight plug and play, no rewiring required. That rating for 10,000,000 cycles may be a stretch, but who knows, it is looking pretty good so far! ## Features - 12 V DC automotive waterproof relays (max 14 V). Note: 12 V and 14 V are coil voltages, they are not the voltage that triggers the switch - Premium quality: durable relay and harness socket with 5 wires; made from high-grade materials to ensure superior quality and long lifespan - Pre-wired Harness: Heavy duty 12/16 AWG wiring harness. Black - 16AWG Pin85, White - 16AWG Pin86, Red - 12AWG Pin30 Yellow - 12AWG Pin87a, and Blue - 12AWG Pin87 - Enhanced Waterproof - The 5-Pin relays are tightly sealed with strong cap and seal ring, excellent performance of waterproof, dust proof and moisture proof, works well in any weather conditions - Package includes: 5 pack Waterproof Relay and Harness. 1x User manual ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07V9M7FMH | | Best Sellers Rank | #2,357 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Replacement Battery Switches | | Brand | Nilight | | Brand Name | Nilight | | Coil Resistance | 100 megaohms | | Coil Voltage | 12 volts | | Connector Type | Through Hole | | Contact Current Rating | 30 A | | Contact Material | Copper | | Contact Type | Normally Closed | | Current Rating | 30 A | | Customer Reviews | 4.6 out of 5 stars 1,211 Reviews | | Global Trade Identification Number | 00812227032197 | | Included Components | 5 pack Waterproof Relay and Harness | | Item Type Name | Nilight 50044R 5 Pack Waterproof 40/30 AMP Heavy Duty 12 AWG Tinned Copper Wires 5-PIN SPDT Bosch Style 12V Automotive Relay and Harness Set,2 Year Warranty | | Manufacturer | Nilight | | Maximum Switching Current | 40 A | | Maximum Switching Voltage | 14 volts | | Minimum Switching Voltage | 14 volts | | Model | 50044R | | Mounting Type | Wall Mount | | Operation Mode | Manual | | Part Number | 50044R | | Specification Met | CE | | UPC | 812227032197 | | Unit Count | 5 Count | | Warranty Description | 2 Years Warranty | ## Product Details - **Connector Type:** Through Hole - **Contact Material:** Copper - **Contact Type:** Normally Closed - **Current Rating:** 30 Amps - **Mounting Type:** Wall Mount ## Images ![Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat - Image 1](https://m.media-amazon.com/images/I/71PMNhBvihL.jpg) ![Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat - Image 2](https://m.media-amazon.com/images/I/71wOb3mgv0L.jpg) ![Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat - Image 3](https://m.media-amazon.com/images/I/61bSlG9epaL.jpg) ![Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat - Image 4](https://m.media-amazon.com/images/I/71kaCKeQ4CL.jpg) ![Nilight 5 Pack Waterproof Relay and Socket Harness 40/30 AMP | Heavy Duty 12 AWG Tinned Copper Wires Pure Copper Core 5-PIN SPDT 12V Automotive Car Trucks RV Marine Boat - Image 5](https://m.media-amazon.com/images/I/71h5p5g+XSL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can I get 6 waterproof relays with sockets? I need 2 each for 3 windows.** A: No **Q: will this work with 2010 hyundai santa fe passenger mirror relay? I'm getting a clicking/ knocking sound from the passenger mirror** A: the relay will not work for you, the relay is for horns, lights, plow equipment, or trailer brakes, the problem is , the internal system in the mirror is warn out, you need a new mirror, and that's about two hundred usd, and your mirror is ten years old **Q: Can this be used as a flasher?** A: Maybe not a "flasher" since there is a steady blue light at the end where the magnetic adapter rip fits, bit it does light up there. **Q: How many amps (at 12v) does the (+) switch pull to open the relay?** A: Ohms law I=E/R 12V/80 Ohms = 150mA or 0.15 Amps ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good relays *by B***. on July 24, 2026* Used one so far, works great. ### ⭐⭐⭐⭐⭐ Relays for Caterpillar Skid Steer *by B***N on November 15, 2025* I was looking for less expensive relays for replacing relays on my CAT Skid Steer. These same relays are used for both engine starter relay and the glow plug relay on the skid steer. I paid about $37 for one relay at the CAT dealer, while this whole five pack of relays are way less than that. I was thinking these Nilight relays would be lower quality, but now I have a different opinion. I weighed the Nilight relay vs the well used, original CAT relay (sorry for the dirt and dust), and they were exactly the same. I tested one relay with a 9V battery, and they had a very solid, distinctive click when the relay contacts changed state. My ohmmeter confirmed the contacts changed state properly. I confirmed the CAT relay fit into the connector the same as the Nilight relay. It is a very tight fit, but that is due to the rubber gasket that prevents moisture intrusion. The icing on the cake is that these Nilight relays are a straight plug and play, no rewiring required. That rating for 10,000,000 cycles may be a stretch, but who knows, it is looking pretty good so far! ### ⭐⭐⭐⭐⭐ Work as expected *by A***R on July 17, 2026* Good product. ## Frequently Bought Together - Nilight 50044R 5 Pack Waterproof 40/30 AMP Heavy Duty 12 AWG Tinned Copper Wires 5-PIN SPDT Bosch Style 12V Automotive Relay and Harness Set - Nilight 10 Pack NI-FH01 Inline Holder 14AWG Wiring Harness ATC/ATO 30AMP Blade Automotive Fuse Holder-10, 2 Years Warranty - Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack, 2 Years Warranty --- ## 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.pe/products/155789201-nilight-5-pack-waterproof-relay-and-socket-harness-40-30](https://www.desertcart.pe/products/155789201-nilight-5-pack-waterproof-relay-and-socket-harness-40-30) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-08-01*