Customized Heavy Duty 7Pin Trailer Cord Spiral Coiled Cable Power Extension Cable
Product name |
Customized Heavy Duty 7Pin Trailer Cord Spiral Coiled Cable Power Extension Cable |
Jacket |
PVC |
Conductor Material |
Copper |
Type |
Insulated |
Rated Voltage |
12V/24V |
Feature |
Heat Resistant |
Sample |
Provided |
Color |
Black/Customized |
MOQ |
300pcs |
1. Product Description
Trailer Cable Spiral Coiled Cable is a retractable power and signal transmission cable designed for trailers, RVs and commercial vehicles. Its unique spiral structure allows the cable to freely expand and contract between 1 meter (retracted state) and 3 meters (stretched state) while maintaining stable power and signal transmission. This cable is suitable for 12V/24V vehicle systems, integrating power supply, lighting control (turn signals, brake lights, reverse lights, etc.) and grounding functions, and is an ideal solution for connecting tractors and trailers.
2. Core advantages
Intelligent telescopic design
1:3 telescopic ratio (1m contraction/3m extension), automatic rebound, avoid entanglement
Patented spiral structure to ensure long-term durability
High load and stable transmission
7-core independent conductors: 5.26mm2 10AWG x2C+3.31mm2 12AWG x1C+2.08mm2 14AWG x4C
Support 25A high current (power line) and 5A signal current
Full environmental protection
IP67 waterproof and dustproof (can be immersed for a short time)
Cold and high temperature resistance (-40ºC~+105ºC)
Anti-oil & UV (no aging for long-term outdoor use)
Standardized interface
7-pin male and female connectors, plug and play
Color coding + digital numbering, anti-wrong insertion design
Super durability
Passed 50,000 telescopic cycle test
3. Typical application scenarios
Freight logistics
Power/lighting system connection between trucks and trailers
Brake lights & turn signal transmission of container trailers
RV travel
Power & lighting control of tractors and RVs
Power supply for external devices in campers
Engineering & agricultural vehicles
Lighting and hydraulic control of excavators/tractor trailers
Power transmission of agricultural equipment (such as planters and harvesters)
Parameters |
Specifications |
Conductor structure |
7 cores (4 power + 3 signals) |
Rated voltage |
24V DC (compatible with 12V system) |
Rated current |
25A (power line) / 5A (signal line) |
Retractable range |
1m (retracted) -3m (extended) |
Protection level |
IP67 (completely dustproof and waterproof) |
Operating temperature |
-40ºC-+105ºC |
Tensile strength |
≥150kg (static) |
Color identification |
ISO standard color code + digital number |
Certification standards |
ISO 1185, SAE J560, CE |
1. Safety use guide
Installation requirements
Make sure the vehicle is turned off before plugging and unplugging the cable
Check the corresponding function of each pin (avoid wrong connection)
Operation taboos
It is forbidden to operate at full load in a fully retracted state
Avoid the cable from contacting high-temperature parts such as the exhaust pipe
Maintenance recommendations
Clean the connector monthly
Test the line conductivity & insulation resistance quarterly
2. FAQ
Q1: Can it be used for electric or hybrid vehicles?
Yes, but ensure that the voltage matches (12V/24V) and avoid interference from the high-voltage system.
Q2: What should I do if the connector is flooded?
Immediately turn off the power and blow it dry with compressed air (hot air baking is prohibited). IP67 protection can be waterproof for a short time, but it needs to be replaced if it is immersed for a long time.
Q3: Maximum number of bends allowed?
Standard version ≥50,000 times of extension and retraction.
Q4: Can the signal cable transmit data (such as camera signals)?
Only analog signals (lighting control) are supported. If data transmission is required, the shielded enhanced version must be selected.
3. Summary
Trailer Cable Spiral Coiled Cable is a high-reliability solution for connecting trailers, RVs and commercial vehicles. Its intelligent retractable design, high current carrying capacity and full environmental protection performance make it the first choice in logistics, engineering and outdoor travel.
Nickel plated plugs are resistant to oxidation, tightly combined and easy to handle, with user-friendly design for easy insertion and removal, making them more user-friendly. The head uses copper plugs that are heat-resistant and flame-retardant, making charging more efficient and stable.
The power cord is wrapped in PVC material, which is flame-retardant, heat-resistant, flame-retardant, and does not leak electricity, making it more reassuring. Pure copper core has stable transmission, good conductivity, low resistance, low heat generation, stable transmission, and sufficient power supply.




Shanghai Fengy Cable Technology Co., Ltd. is an advanced wire and cable manufacturer that integrates R&D, production, sales, and service. The company is located in Shanghai, China, covers an area of 5000 square meters and has more than 150 employees.
Our main products include flexible cables, spiral cables, drag chain cables, power cords, extension cords, wire harnesses, audio cables, video cables, waterproof cables, data cables, medical cables, ruler cables, and various customized and special cables. In addition, we provide design and development services for wires and connectors, aiming to meet the diverse needs of our clients.
Our company has a strong technical research and development team, composed of a number of senior engineers with deep professional theoretical knowledge and rich practical experience. We continue to innovate and develop a series of high-performance, cost-effective cables. We have introduced first-class production technology and process at home and abroad, and have multiple automatic production lines, which can achieve large-scale production and standardized operation process. Our company has excellent quality management, outstanding product design and mold development manufacturing capabilities.
Our company has passed the lS0 9001 quality management system certification, and our products have UL, 3C, CE, TUV, SAA, SGS and other international authoritative certifications. With excellent quality and competitive price, our products sell well in the United States, Europe, the Middle East, South America, Southeast Asia and other more than 50 countries and regions.
Shanghai Fengy Cable Technology Co., Ltd. always adheres to the business philosophy of"customer first, quality foremost," We continually enhance our company's strengths to provide better products and prices to our clients, fostering mutual growth, We look forward to collaborating with you to achieve a brilliant future together.

Packing
Spiral cable and cable harness are packed in carton, then in wooden pallet.
PVC cable and PUR cables are packed in wooden drum and in wooden box.
We will pack the cable in good condition according to the size.
Delivery
According to customer's choices.Sample usually sent by express. Bulk goods can be sent by air, by sea.
Please contact with us for shipping cost.,we have discount with DHL,TNT,UPS,FEDEX and cooperated with shipping agent If you don't have the express account.
Lead time:Normally,10-20 days
Q 1: I didn't find my needed model in this page.
Answer: Dear Friends, catalog will emailed to you asap when you contact with us. Also, we supply customization service. So,contact us !
Q 2: What's your Minimum Order Quantity?
Answer: Normally, 300m, but we also accept 100m order.
Q 3: When can I get the price and what's the validity?
Answer: usually within one day.Validity is 30 days
Q 4: What's your payment terms?
Answer: By T/T 30% in advance ; Balance 70% before shipment.
Q 5: What's your delivery time?
Answer: It depends on whether we just have the stock for your type. Or, it takes about 10 - 30 days for normal orders.
Q 6: What's your package method ?
Answer: Usually, it's cartons, and for big cable, we use wooden drum.
Any other questions please contact with us freely:)