Ronybuy 5 Pin 12V Relay Harness Heavy Duty Copper

Description

Product Overview

The Ronybuy 5 Pin 12V Relay Harness is engineered for demanding automotive applications. Constructed with a robust IP65‑rated shell, the unit resists water and dust intrusion, ensuring long‑term reliability. Inside, heavy‑duty tinned copper wires—12 AWG for high‑current paths and 16 AWG for control lines—provide excellent conductivity and corrosion resistance. The relay features a SPDT contact configuration with a normally open design, a 40 A current rating, and operates at 12 V coil voltage with an 80 Ω resistance. Dimensions of 5 × 2 × 1 inches and a lightweight 6.7 oz profile make it easy to fit into tight engine bays.

Usage

Designed for 12 V automotive systems, this relay harness is ideal for controlling lights, horns, starters, cooling fans, speakers, wipers, and traction control modules. Professional technicians and experienced DIYers will appreciate the clear color‑coded wiring (Blue, Red, Yellow, Black, White) that simplifies installation and troubleshooting. Whether upgrading a vehicle’s electrical system or replacing a failed relay, the harness delivers consistent performance in both daily driving and high‑performance scenarios.

Why Choose Us

Ronybuy combines rigorous CE certification with premium materials to guarantee safety and durability. Each harness undergoes strict quality testing for temperature resistance up to 125 °C and voltage tolerance up to 14 V, surpassing standard automotive specifications. Our commitment to precise engineering means fewer failures, reduced maintenance costs, and peace of mind for vehicle owners.

Key Features

• IP65 waterproof shell protects against moisture and dust.
• Heavy‑duty copper wires with color coding for easy installation.
• 40 A maximum switching current and 12 V coil for reliable performance.
• Compact socket‑mount design fits standard automotive relay sockets.
• CE certified, tested for up to 125 °C operating temperature.

FAQ

What vehicles are compatible with this relay harness?

The 5 Pin 12V relay harness fits any vehicle that uses a standard 5‑pin automotive relay, including cars, trucks, SUVs, and off‑road vehicles.

Can I use this relay for high‑current accessories like winches?

Yes, with a 40 A rating it can safely handle high‑current loads such as winches, provided the accessory does not exceed the relay’s voltage limit of 14 V.

Is professional installation required?

While the harness is designed for easy socket‑mount installation, we recommend that a qualified technician perform the wiring to ensure safety and optimal performance.

What does IP65 rating mean?

IP65 indicates the relay housing is dust‑tight and protected against water jets from any direction, making it suitable for harsh automotive environments.

How do I identify the correct pins for wiring?

The harness includes a wiring diagram: Black (85) is ground, Red (30) is power, White (86) is trigger, Yellow (87a) is normally closed output, and Blue (87) is normally open output.