{"product_id":"ronybuy-5-pin-relay-kit-for-automotive-12v-pack-of-5-waterproof-40-30a-sealed-harness","title":"Ronybuy 5-Pin Relay Kit for Automotive 12V - Pack of 5, Waterproof 40\/30A Sealed Harness","description":"\u003cp\u003e\u003cstrong\u003eRonybuy’s 5-pin waterproof relay kit is a ready-to-install 12V SPDT relay and harness set (pack of 5) built for automotive and marine circuits that need a durable 40\/30A switching solution.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis relay kit combines sealed sockets, tinned copper wiring, and a clear pin-color harness to simplify replacing or upgrading vehicle and equipment electrical circuits. Designed for use with standard 12V automotive relays, each pre-wired socket provides IP65-level protection against dust and splashes and supports both positive and negative trigger configurations. The kit’s mix of 12 AWG and 16 AWG conductors gives you heavier current capability on the load legs and lighter gauge control wires for compact routing.\u003c\/p\u003e\n\n\u003ch3\u003eHow is this relay kit protected against moisture and dirt?\u003c\/h3\u003e\n\u003cp\u003eEach socket housing uses a durable insulation shell, sealed terminal caps and rubber grommets to block water and contaminants. That makes these sockets suitable for exposed engine bays, under-hood mounts, or marine spray-prone areas when installed correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIP65-rated shell and sealed terminal caps for splash resistance\u003c\/li\u003e\n  \u003cli\u003eRubber ring seals keep dust and moisture away from metal contacts\u003c\/li\u003e\n  \u003cli\u003eDurable insulation material resists oil and grime commonly found in engine compartments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat wiring and current capacity does the kit provide?\u003c\/h3\u003e\n\u003cp\u003eThe harness pairs heavier 12 AWG tinned copper on the main load terminals (pins 87, 30, 87a) with 16 AWG control wires for coil connections (pins 85, 86). The relay contacts are rated for up to 40A switching and 30A continuous load, suitable for many vehicle accessories when load and duty cycle remain within limits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePin 87 (blue) and pin 30 (red) and pin 87a (yellow) are 12 AWG tinned copper\u003c\/li\u003e\n  \u003cli\u003ePin 85 (black) and pin 86 (white) are 16 AWG tinned copper\u003c\/li\u003e\n  \u003cli\u003eOperates at 12VDC (safe up to 14V max) with 40A\/30A switching capability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich devices and vehicles are compatible with this relay harness?\u003c\/h3\u003e\n\u003cp\u003eThis kit is engineered for common 5-pin automotive relays and supports switches, horns, cooling fans, starters, lights, and similar 12V accessories. It works with cars, trucks, boats, ATVs, and off-road equipment where a compact, sealed relay socket is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for horns, radiator and auxiliary fans, starters, lights, and wipers\u003c\/li\u003e\n  \u003cli\u003eFits standard 5-pin SPDT 12V relays used in automotive systems\u003c\/li\u003e\n  \u003cli\u003eIdeal for retrofit, repair, or new wiring harness projects on vehicles and boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and troubleshoot this relay harness safely?\u003c\/h3\u003e\n\u003cp\u003eFollow the included wiring diagram and take care when seating a relay into the socket to avoid bending pins. Use proper fusing at the supply side, route wires away from sharp edges and hot surfaces, and consider professional installation if you're not comfortable with vehicle electrical systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRefer to wiring diagram for correct pin mapping and trigger polarity\u003c\/li\u003e\n  \u003cli\u003eUse inline fuses sized for the accessory and load leg current\u003c\/li\u003e\n  \u003cli\u003eSecure and protect wires from abrasion and heat during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Ronybuy’s 5-pin waterproof relay harness pack of five is aimed at DIY mechanics, fleet maintainers, marine hobbyists, and off-roaders who need dependable sealed relay sockets with heavy-duty tinned copper wiring for 12V accessories. If you’re replacing worn relay bases, building a custom wiring harness, or upgrading circuits to a more water-resistant solution, this kit offers a clear color-coded harness, robust conductor sizes on load paths, and sealed protection to help prolong relay and contact life when installed and fused properly.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can these relay sockets handle wet conditions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The sockets are IP65-style sealed with rubber rings and caps to resist water splashes and dust when properly installed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the harnesses include tinned wires and which gauges?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Load legs are 12 AWG tinned copper (pins 87, 30, 87a) and coil wires are 16 AWG tinned copper (pins 85, 86).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Ronybuy","offers":[{"title":"Default Title","offer_id":67591175176377,"sku":"B0DBJ3C15W","price":62.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ronybuy-relay-kit-front-packaging.jpg?v=1790543177","url":"https:\/\/redleafauto.ca\/products\/ronybuy-5-pin-relay-kit-for-automotive-12v-pack-of-5-waterproof-40-30a-sealed-harness","provider":"Redleaf Auto","version":"1.0","type":"link"}