--- product_id: 233221272 title: "HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease" brand: "hd switch" price: "$26.04" currency: USD in_stock: true reviews_count: 10 category: "Hd Switch" url: https://www.desertcart.us/products/233221272-hd-switch-12v-40a-upgrade-waterproof-relay-replaces-hella-4rd store_origin: US region: United States of America --- # 40A heavy-duty current IP68 waterproof sealed LED diagnostic indicator HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease **Brand:** hd switch **Price:** $26.04 **Availability:** ✅ In Stock ## Summary > 💡 Upgrade your gear with the relay that works as hard as you do! ## Quick Answers - **What is this?** HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease by hd switch - **How much does it cost?** $26.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/233221272-hd-switch-12v-40a-upgrade-waterproof-relay-replaces-hella-4rd) ## Best For - hd switch enthusiasts ## Why This Product - Trusted hd switch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Corrosion? Not Here.:** Includes dielectric grease to protect connections and extend relay life. - • **Instant Status Insight:** Integrated LED light for quick, foolproof relay diagnostics. - • **Plug & Play Confidence:** Direct replacement for Hella 4RD series with easy solder connectors. - • **Power Through Anything:** Handles up to 40 amps for your toughest equipment needs. - • **Built to Brave the Elements:** IP68 certified waterproof and dustproof for ultimate durability. ## Overview The HD Switch 12V 40A Waterproof Relay is a rugged, IP68-certified SPDT relay designed for heavy-duty equipment like lawn mowers and tractors. Featuring an integrated LED indicator for real-time diagnostics and including dielectric grease to prevent corrosion, it ensures reliable performance and easy maintenance. This relay is a direct replacement for popular Hella models, delivering superior durability and hassle-free installation. ## Description The HD Switch WaterProof LED Relay Makes Diagnostics a Breeze. HD Switch Integrated an LED Light to Show When the Relay has been Switched. The LED Light Turns On When The Relay is Activated. The LED Light Shows if the Relay is Getting Power and If the Relay is Switching Properly; Making Diagnostics Simple. The HD Switch Relay is IP68 Certified, 100% Sealed and Completely DustProof & WaterProof. This is a Costly Manufacturing Upgrade that Most Aftermarket Relays Do Not Have. Each HD Switch Relay Comes with a Free Packet of Dielectric Grease Used to Coat The Terminals and Protect against Corrosion. Review: green means good - Great for my toro z4220. I Liked how the light was light when it had power. Easy to tell when it quit. Review: relay repair - Fixed the tailgate lift on my truck. Awesome ## Features - HD⚡SWITCH: LED UPGRADE - Quick & Easy Diagnostics - SUPERIOR QUALITY: Engineered For Lawn Mowers, Tractors, & Heavy Duty Equipment - 100% SEALED: IP68 Certified Water-Proof Design - FREE Dielectric Grease - Prevents Corrosion & Improves Connection ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08FTLBJYH | | Best Sellers Rank | #121,599 in Automotive ( See Top 100 in Automotive ) #30 in Automotive Replacement Relay Control Module Relays | | Brand | HD Switch | | Brand Name | HD Switch | | Coil Resistance | 40 Ohms | | Coil Voltage | 12 Volts | | Connector Type | Solder | | Contact Current Rating | 40 Amps | | Contact Type | Spdt | | Current Rating | 40 Amps | | Customer Reviews | 4.5 out of 5 stars 78 Reviews | | Manufacturer | HD Switch | | Maximum Switching Current | 40 Amps | | Minimum Switching Voltage | 12 Volts | | Model | 4rd-931-680-01 | | Number of Terminals | 2 | | Operation Mode | Manual | | Specification Met | Ip68 | | Wattage | 3.6 watts | ## Product Details - **Brand:** HD Switch - **Connector Type:** Solder - **Contact Type:** Spdt - **Current Rating:** 40 Amps - **Operation Mode:** Manual ## Images ![HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - Image 1](https://m.media-amazon.com/images/I/71XhJ8iH17L.jpg) ![HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - Image 2](https://m.media-amazon.com/images/I/81MI88sKHFL.jpg) ![HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - Image 3](https://m.media-amazon.com/images/I/81XehwrmmpL.jpg) ![HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - Image 4](https://m.media-amazon.com/images/I/81RZCYJa6TL.jpg) ![HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001,931680011, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - Image 5](https://m.media-amazon.com/images/I/81YiaLc1p5L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ green means good *by J***V on May 21, 2025* Great for my toro z4220. I Liked how the light was light when it had power. Easy to tell when it quit. ### ⭐⭐⭐⭐⭐ relay repair *by S***E on October 9, 2025* Fixed the tailgate lift on my truck. Awesome ### ⭐⭐⭐⭐⭐ Fit my Case 70XT! Light on the relay is handy! *by L***A on March 5, 2025* Fit on my Case 70XT skid steer…. It’s handy having the light on the relay so you know if it’s working or not! ## Frequently Bought Together - HD Switch 12V 40A Upgrade Waterproof Relay Replaces Hella 4RD 931 680-01, 4RD93168001, 007903001 SPDT w/LED Indicator Light & Dielectric Grease - HELLA 931680011 Relay 12V 20/40A Spdt Res Sld, Black - OEM Volvo Penta OEM Trim & Tilt Remote Control Switch 3856844 --- ## 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.us/products/233221272-hd-switch-12v-40a-upgrade-waterproof-relay-replaces-hella-4rd](https://www.desertcart.us/products/233221272-hd-switch-12v-40a-upgrade-waterproof-relay-replaces-hella-4rd) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*