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Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Free tracked shipping across Canada · 30-day returns · Prices in CAD
Questions? redleafauto.ca@gmail.com





Every order ships free with tracking. Processing is usually 1–2 business days and delivery 5–12 business days.
Email us your order number within 30 days of delivery and we send the return steps the same business day. Refunds within 5 business days of receipt.
Send your year, make, model and trim to redleafauto.ca@gmail.com and we check the listing details against it before you order.
Joinfworld Relay Box is a ready-to-install 12V automotive fuse and relay panel that combines six relays and fourteen ATC/ATO blade fuses in a waterproof, LED‑monitored housing.
This preassembled relay fuse box simplifies vehicle electrical upgrades by grouping relays, fuses and status LEDs in one compact module. Designed for general automotive use — from trucks and SUVs to boats and RVs — the unit arrives with 2× 5‑pin 40A relays, 4× 4‑pin 40A relays and a full set of blade fuses (10A–40A). The enclosure is flame‑retardant and fitted with a buckle cover for improved water resistance, and each circuit has an LED indicator for immediate visual feedback during installation and troubleshooting.
The Joinfworld panel is delivered fully assembled with relays and fuses pre‑installed, eliminating the need to solder or splice the main relay modules. Wired mounting points and a relay module reduce setup time and let you focus on routing harnesses instead of building a relay bank from scratch.
Each relay and fuse position has an LED indicator so you can instantly see which circuits are energized or have blown fuses. The housing uses flame‑retardant nylon and includes overvoltage and surge protection features to help protect connected accessories.
The cover is secured with a durable buckle and the shell material is designed to resist moisture, making the box suitable for exposed locations when mounted correctly. While not rated as an underwater component, the design improves resistance to splashes, dust and routine vehicle exposure.
The Joinfworld relay box is a universal 12V solution intended for a wide range of vehicles and aftermarket accessories. It organizes multiple circuits — lighting, auxiliary power, pumps and more — so electrical systems remain tidy and serviceable.
Who is this for: This product is aimed at DIY mechanics, installers and vehicle owners who need a neat, consolidated relay and fuse solution without building a custom panel. It's especially useful for people adding several 12V accessories who want clear diagnostics, reduced wiring complexity and a weather‑resistant enclosure for off‑road, marine or utility use.
Q: Can I use this relay box for marine applications?
A: Yes, it's suitable for marine and wet environments when mounted in a protected location; the buckled cover improves water resistance but avoid full submersion.
Q: Are the relays and fuses included and preinstalled?
A: Yes, the unit comes assembled with 2 5‑pin and 4 4‑pin 40A relays and 14 blade fuses (10A–40A) already installed.
Shipping: free tracked shipping to every Canadian province and territory on every order. Most orders are processed within 1–2 business days and arrive within 5–12 business days; you receive a tracking link by email as soon as it ships.
Returns: 30 days from delivery to return any unused item in its original packaging. Email us with your order number and we send the return instructions the same business day. Refunds go back to your original payment method within 5 business days of the item arriving with us.
Damaged or wrong item? Tell us within 30 days and we replace or refund it, including the return postage.
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