{"product_id":"online-led-store-true-mods-6-pack-bosch-style-4-pin-12v-fused-relay-kit-30a-14awg-prewired-harnesses","title":"ONLINE LED STORE True MODS 6-Pack Bosch-style 4-Pin 12V Fused Relay Kit — 30A, 14AWG Prewired Harnesses","description":"\u003cp\u003e\u003cstrong\u003eThe True MODS 6-Pack Bosch-style 4-pin fused relay kit is a ready-to-install set of 12V SPST relays with integrated fuse sockets and heavy-gauge wiring for reliable 30A switching.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit from ONLINE LED STORE bundles six Bosch-style 4-pin single-pole single-throw (SPST) relays, matching harnesses and blade fuses so you can quickly add high-current switching to automotive, marine, or off-grid projects. Each harness includes a built-in fuse holder populated with a 30A blade fuse and heavy-duty 14 AWG main conductors for durable power delivery. The relays are rated for 12VDC operation (safe to 14V max) and engineered to handle up to 30 amps on the switched output.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these relays simplify wiring high-current accessories?\u003c\/h3\u003e\n\u003cp\u003eUsing a relay shifts the heavy current flow away from switches and thin wiring, protecting controls while delivering clean power to accessories. The included harnesses have clearly colored leads and an integrated fuse socket so you can mount the relay close to the load or battery for safer runs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuilt-in 30A blade fuse protects the circuit at the relay location.\u003c\/li\u003e\n  \u003cli\u003eHeavy 14AWG wires for main contact reduce voltage drop and heat.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play Bosch-style socket makes swapping or replacing relays fast.\u003c\/li\u003e\n  \u003cli\u003eColor-coded leads: Black ground, Red power, White trigger, Blue switched output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat wiring configuration and terminals are included?\u003c\/h3\u003e\n\u003cp\u003eEach relay in the set follows the Bosch 4-pin SPST layout for simple control: two coil pins and two contact pins. The harnesses match those pins so you won’t need to splice terminals or cross-reference charts during installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePin 85 — ground (black lead) for coil return.\u003c\/li\u003e\n  \u003cli\u003ePin 86 — trigger (white lead) to activate the coil.\u003c\/li\u003e\n  \u003cli\u003ePin 30 — supply\/main VDC (red lead) with 14AWG conductor.\u003c\/li\u003e\n  \u003cli\u003ePin 87 — normally open output (blue lead) to the accessory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan these relays handle my accessory’s power needs?\u003c\/h3\u003e\n\u003cp\u003eEach relay is specified for 30 amps of switching capacity, suitable for many lights, motors, pumps, and aftermarket accessories found in vehicles and boats. For continuous high-draw loads or grouped circuits, plan wiring and fuse sizing accordingly and consider paralleling circuits only when proper design guidelines are followed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e30A switched capacity with included 30A blade fuse in each harness.\u003c\/li\u003e\n  \u003cli\u003e12V nominal rating, tolerant up to 14V peak system voltage.\u003c\/li\u003e\n  \u003cli\u003e14AWG main conductors minimize voltage drop on typical accessory runs.\u003c\/li\u003e\n  \u003cli\u003eSix relays and six harnesses for multi-accessory installations or spares.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the kit save time during installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eThe prewired harnesses and included fuses remove repetitive prep work and standardize wiring across installations, reducing error and service time. The Bosch-style socket design allows quick relay replacement without rewiring if a relay fails or you upgrade components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-assembled harnesses eliminate crimping and soldering on-site.\u003c\/li\u003e\n  \u003cli\u003eIncluded blade fuses let you test circuits immediately after mounting.\u003c\/li\u003e\n  \u003cli\u003eModular relays are simple to replace or swap during troubleshooting.\u003c\/li\u003e\n  \u003cli\u003eSix-pack provides spares for future add-ons or repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This True MODS relay kit is ideal for DIY mechanics, electricians, installers and hobbyists who add lighting, winches, pumps, stereo amplifiers or other 12V accessories to vehicles, boats, ATVs, or custom electrical projects. It’s designed for anyone who wants a clean, protected, and easy-to-service relay solution without fabricating harnesses from scratch.\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: Are fuses included with the relays?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — each harness has a 30A blade fuse preinstalled in the built-in fuse socket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can these relays be used on 14V systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — they are rated for 12V nominal and tolerate up to 14V maximum system voltage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ONLINE LED STORE","offers":[{"title":"Default Title","offer_id":48087376199838,"sku":"B01NBAO1SA","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/online-led-store-true-mods-front-view-packaging.jpg?v=1785922320","url":"https:\/\/northtrailauto.ca\/products\/online-led-store-true-mods-6-pack-bosch-style-4-pin-12v-fused-relay-kit-30a-14awg-prewired-harnesses","provider":"North Trail Auto","version":"1.0","type":"link"}