--- product_id: 36964846 title: "True MODS 1 Pack Bosch Style 5-Pin 12V Waterproof Relay Kit SPDT 30/40 Amp" brand: "online led store" price: "£13.36" currency: GBP in_stock: true reviews_count: 10 category: "Online Led Store" url: https://www.desertcart.co.uk/products/36964846-true-mods-1-pack-bosch-style-5-pin-12v-waterproof store_origin: GB region: United Kingdom --- # 40A high switching power Waterproof rugged design Bosch style 5-pin SPDT relay True MODS 1 Pack Bosch Style 5-Pin 12V Waterproof Relay Kit SPDT 30/40 Amp **Brand:** online led store **Price:** £13.36 **Availability:** ✅ In Stock ## Summary > ⚡ Stay Powered, Stay Ahead — The Ultimate Relay Upgrade ## Quick Answers - **What is this?** True MODS 1 Pack Bosch Style 5-Pin 12V Waterproof Relay Kit SPDT 30/40 Amp by online led store - **How much does it cost?** £13.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/36964846-true-mods-1-pack-bosch-style-5-pin-12v-waterproof) ## Best For - online led store enthusiasts ## Why This Product - Trusted online led store brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly Setup:** Clear wiring color codes and downloadable manual for hassle-free installation - • **Plug & Play Precision:** Bosch style 5-pin SPDT relay for seamless integration and versatile control - • **Heavy Gauge, Heavy Duty:** 12AWG wires deliver superior current flow and durability - • **Power Up with Confidence:** Handles up to 40 amps for heavy-duty automotive demands - • **Built to Brave the Elements:** Waterproof construction ensures reliable performance rain or shine ## Overview The True MODS Bosch Style 5-Pin 12V Waterproof Relay Kit offers a robust 40A switching capacity with a durable waterproof design and heavy-duty 12AWG wiring. Engineered for automotive, truck, and RV applications, this SPDT relay ensures reliable, versatile control with easy installation supported by a detailed user manual. ## Description Buy True MODS 1 Pack Bosch Style 5-Pin 12V Waterproof Relay Kit SPDT 30/40 Amp | Waterproof, Interlocking Harness Socket, 12 AWG, SPDT, 30/40 Amp, 12 Volt Automotive Relays, For Auto Car Truck Fan RV: Starter - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Good product - Installed yesterday and works as a charm! Review: Easy to use, effective! - Outstanding module, this was able to quickly and efficiently help me wire a new horn to my truck safely. Would buy again. ## Features - User Manual available for download under Product Information Details - Waterproof construction & heavy duty 12AWG wires for the main contact. - Bosch style 5-Pin SPDT (Single Pole Double Throw) Relay. - 12VDC (14V Max) and 40A/30A High Switching Capability. - Wire Specifications: Black - Ground (85), Red - VDC (30), White - Trigger (86), Yellow - Output N/C (87a), and Blue - Output N/O (87). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N66W2XF | | Best Sellers Rank | #10,764 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Starter Relays | | Brand | ONLINE LED STORE | | Brand Name | ONLINE LED STORE | | Coil Voltage | 12 volts | | Connector Type | Solder | | Contact Current Rating | 40 A | | Contact Material | Silver Plated Copper | | Contact Type | Normally Closed | | Current Rating | 40 A | | Customer Reviews | 4.6 out of 5 stars 1,509 Reviews | | Item Weight | 3.84 ounces | | Manufacturer | ONLINE LED STORE | | Maximum Switching Current | 40 A | | Minimum Switching Voltage | 10 volts_of_direct_current | | Model | SUVELAM | | Mounting Type | Surface Mount | | Operation Mode | Auto,Manual | | Part Number | PSZACCEPS177R | | UPC | 816165023866 | | Wattage | 14.4 watts | ## Product Details - **Connector Type:** Solder - **Contact Material:** Silver Plated Copper - **Contact Type:** Normally Closed - **Current Rating:** 40 A - **Mounting Type:** Surface Mount ## Images ![True MODS 1 Pack Bosch Style 5-Pin 12V Waterproof Relay Kit SPDT 30/40 Amp - Image 1](https://m.media-amazon.com/images/I/81m2P8Wl3RL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How many amps does it take to make the relay switch from open to closed?? I have a 1.5 amp circuit that I want to use as the switch power** A: The relay only requires about 150 milliamps @ 12 V DC to be triggered. Hope this helps. **Q: I am wanting to put in an on/off switch on a 4wheeler to the existing 12v dc auxilary jack. what wires would to to what posts on the 3 prong switch?** A: It would be better to run a new fused feed from the battery and use the accessory wire from the key switch so you always shut it off and not forget and run your battery dead. **Q: Im noticing a constant buzz from my relays. What could be the issue? Bad switch? Bad ground? too much voltage drop?** A: Are all the relays that are buzzing connected to the same trigger switch? If so, the trigger switch may be supplying power (or ground) to the relays even when in the "off" position. This is only one possibility. The relay itself may be faulty, just the likelihood of multiple units failing at the same time is slim. Please contact us directly to further troubleshoot the matter. Thanks. **Q: I am hooking up a amp to a mototcycle, the instruction says i need to use this. Why?** A: HOW MANY AMPS DOES YOUR AMPLIFIER DRAW..... IT MAY NEED ITS OWN CIRCUT BREAKER FED THUR THIS RELAY, BE CAREFULLY YOU DONT BURN THINGS UP, USE THE RIGHT SIZE WIRING AND PROTECT WITH THE RIGHT SIZE FUSE ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by A***O on May 18, 2026* Installed yesterday and works as a charm! ### ⭐⭐⭐⭐⭐ Easy to use, effective! *by S***S on January 8, 2026* Outstanding module, this was able to quickly and efficiently help me wire a new horn to my truck safely. Would buy again. ### ⭐⭐⭐⭐⭐ Good Quality, Heavy Duty. *by K***N on April 21, 2018* This is a really nice heavy duty relay. I put it in my 2017 Superduty to run my auxiliary backup lights with my upfitter switches. With this relay installed I can run the auxiliary backup lights in two modes, ON when ever I want (even with the truck OFF) or make them go ON and OFF with the factory back up lights. Works great and I didn’t have to use a diode. My configuration uses two of the upfitter switches in the truck. The mounting bracket worked out nice. This relay is water proof as well, has a nice ribbed torturous path gasket. 7/16/20 Update: Two years now and still working, no issues. Thumbs up! 7/25/2023 Still going strong! 05/21/24 still working!!! I bought two of these on my original purchase, one as a spare because that’s what I do. The spare is still sitting on the shelf in my basement. ## Frequently Bought Together - True MODS 1 Pack 5-Pin 12V Bosch Style Waterproof Relay Kit [Harness Socket] [12 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Marine Relays for Boats Auto Fan Cars - 12 AWG Inline Fuse Holder - 12 Gauge Fuse Holder for 30A Blade Fuse (6 Pack) - 10 Gauge Fuse Holder - 10 AWG Inline Fuse Holder with 40 AMP ATC Blade Fuses (4pack) --- ## 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.co.uk/products/36964846-true-mods-1-pack-bosch-style-5-pin-12v-waterproof](https://www.desertcart.co.uk/products/36964846-true-mods-1-pack-bosch-style-5-pin-12v-waterproof) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-09-06*