- Home Page /
- Automotive /
- Automotive Replacement Parts /
- Switches & Relays /
- Relays /
- Accessory Power /
- Hosyond 5 Pack 12V DC 40/30 AMP Waterproof Re...
0 ratings
Item #:
74037686
Hosyond 5 Pack 12V DC 40/30 AMP Waterproof Relay Harness Tinned Copper Wires 5-PIN SPDT Automotive Relay
85% of respondents would recommend this to a friend
Item #:
74037686
KYD 27
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Order now and get it around Saturday, September 26
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Experience unmatched durability and performance with our 12V DC 40/30 AMP Waterproof Relay - engineered for your automobile control devices!
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
What Stands Out
High Current Capacity
Designed to handle up to 40/30 amps, these relays ensure reliable performance for automotive applications, allowing users to operate heavy-duty equipment with confidence and safety.
Waterproof Design
With a waterproof casing, this relay harness is resilient against moisture and environmental factors, making it ideal for outdoor and challenging automotive settings to prevent malfunction.
Tinned Copper Wires
Crafted with tinned copper wires, these harnesses provide superior conductivity and resistance to corrosion, ensuring durability and maximum efficiency, extending the lifespan of automotive electrical systems.
Product Details
| Connector Type | Spdt |
| Contact Type | Normally Open |
| Current Rating | 40 A |
| Mounting Type | Surface Mount |
| Operation Mode | Automatic |
| Wattage | 1.8 watts |
| Coil Resistance | 80 ohm |
| Coil Voltage | 12 volts_of_direct_current |
| Contact Current Rating | 40 A |
| Maximum Switching Current | 40 A |
| Maximum Switching Voltage | 15.6 volts_of_direct_current |
| Minimum Switching Voltage | 5 volts_of_direct_current |
| Contact Material | Copper |
| Brand Name | Hosyond |
| UPC | 732214748200 |
| Number of Items | 5 |
| Included Components | 5 x 12V DC 40/30 AMP Waterproof Relay |
| Manufacturer | Hosyond |
| Part Number | JD2912 |
| Specification Met | CE |
| Item Weight | 1.5 lbs (680 grams) |
What's in the box
5 x 12V DC 40/30 AMP Waterproof Relay
Who Should Buy?
-
Automotive Enthusiasts
Ideal for modifying or upgrading vehicle electrical systems with reliable, waterproof relays for better performance.
-
DIY Projects
Perfect for hobbyists undertaking projects that require reliable control of electrical components in various setups.
-
Marine Applications
Excellent for boat electrical systems where waterproof and corrosion-resistant components are essential for safety.
-
Heavy Industrial Use
Not suitable for high-demand industrial applications where more robust and higher-rated relays are required.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a 5-PIN SPDT automotive relay?
Answer: A 5-PIN SPDT (Single Pole Double Throw) automotive relay is an electrical switch that controls a high current electrical circuit using a low current control signal. It consists of five pins, including two for input (coil power) and three for output (normally open, normally closed, and common). This relay is ideal for automotive applications, allowing you to switch various devices, such as lights, motors, and other accessories, significantly improving the functionality of your vehicle’s electrical system. -
Question:
How does the waterproof feature of this relay harness benefit automotive use?
Answer: The waterproof feature of the 5 Pack 12V DC relay harness ensures that the components are protected from moisture and external elements. This is particularly crucial in automotive environments where the wiring may be exposed to rain, splashes, or humidity. By preventing corrosion and electrical failures, the waterproof design enhances the reliability and longevity of the harness, making it suitable for all weather conditions, and is essential for applications like off-road vehicles or marine settings. -
Question:
What voltage is required to operate these relays?
Answer: These relays are designed to operate at a standard 12V DC, which is the typical voltage used in most automotive electrical systems. When connected correctly, the relay activates with just a small control voltage and can handle higher currents (up to 30 amps), allowing efficient control of larger devices such as lights and motors without the risk of overload. This combination of low control voltage and high load capacity makes them perfect for automotive and DIY projects. -
Question:
Can I use these relays for applications outside of automotive settings?
Answer: Yes, while primarily intended for automotive use, the 5-PIN SPDT automotive relay harness can also be utilized in various non-automotive applications. They are suitable for controlling home appliances, garden lighting, PC fans, and more. Whether you’re setting up a custom lighting system in your basement or automating garden irrigation, these relays provide a robust solution for low voltage switching needs, making them versatile for numerous electronics projects. -
Question:
What can I control using this relay harness?
Answer: With the 5 Pack 12V DC relay harness, you can control a variety of devices including automotive lights (headlights, brake lights), electric fans, pumps, and audio accessories. The harness’s ability to manage high current loads means you can run multiple devices without the risk of circuit overload. This capability makes it particularly valuable for tasks like adding auxiliary lighting for night driving or integrating electric systems into custom builds, allowing for greater versatility in your vehicle modifications. -
Question:
Are these relay harnesses easy to install?
Answer: Yes, the relay harness is designed for easy installation and comes with tinned copper wires for enhanced conductivity and corrosion resistance. Each harness typically includes clear markings for connecting wires, and can be wired directly to your automotive system without extensive modifications. This makes it an appealing choice for both professional installers and DIY enthusiasts looking to upgrade their vehicle's electrical system efficiently. -
Question:
What material are the harness wires made of?
Answer: The harness wires are made of tinned copper, which is an excellent choice for automotive applications due to its conductive properties and resistance to corrosion. Tinning protects the copper wiring from oxidation that can occur in a moist environment, ensuring a reliable electrical connection over time. This durability is crucial for outdoor and long-term applications, reducing the need for frequent replacements and maintenance for your wiring systems. -
Question:
How many relays come in the package, and is it cost-effective?
Answer: The package contains five relays, allowing for economical and efficient multiple installations or repairs in automotive and electronic projects. Purchasing in bulk not only reduces the overall cost per relay but also gives you the flexibility to work on several projects simultaneously. This is ideal for mechanics, hobbyists, or anyone looking to enhance their electrical systems without a frequent need for additional supplies. -
Question:
Where can I buy the 5 Pack 12V DC 4030 AMP Waterproof Relay Harness Tinned Copper Wires 5-PIN SPDT Automotive Relay in Cayman Islands?
Answer: You can purchase the 5 Pack 12V DC 4030 AMP Waterproof Relay Harness at Ubuy, which offers a wide selection of automotive accessories online. Ubuy is recognized for providing quality products along with user-friendly shopping experiences, making it easier for you to find and acquire the relay harness you need right from the comfort of your home. -
Question:
What safety features do these automotive relays have?
Answer: These automotive relays are designed with built-in safety features such as overload protection, which prevents damage to your electrical system under excessive load conditions. Additionally, the construction of these relays is sturdy to withstand vibrations and shocks commonly found in automotive environments. This focus on safety ensures reliable operation and helps to protect both the devices being controlled and the vehicle's overall electrical system.
Hosyond Accessory Power Editorial Review
No editorial reviews found
Customer Reviews & Ratings
57 customers ratings
-
5 Star
75%
-
4 Star
11%
-
3 Star
11%
-
2 Star
0%
-
1 Star
3%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
KYD 27
Order now and get it around Saturday, September 26
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- High switching capability - supports up to 40 amps at 14VDC.
- Superior waterproof and dustproof design for enhanced longevity.
- Easy installation with fixed metal holes and clear wire sizes.
- Manufactured from high-grade flame-retardant materials.
- Features a pure copper core for improved conductivity and stable performance.
- Versatile applications suitable for automotive use.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.