Trailer Light Adapter Cable for Car to Trailer Towing Kit

Part Number: 306144

Product Introduction

The 306144 Towing Kit is a heavy-duty adapter cable engineered to establish reliable, all-weather electrical connections between a vehicle's lighting system and a trailer. Rated IP67 — fully dust-tight and protected against temporary immersion in water — it is equally suited to aftermarket trailer conversions and original-equipment (OEM) designs, delivering dependable performance in rain, mud, snow, car washes and other harsh road conditions.

Unlike conventional adapters that draw current directly from the vehicle's lighting circuit, this kit adopts an independent power supply design: the operating current is taken directly from the vehicle battery, while the car's lighting output is used only as a trigger signal. Thanks to this relay-driven architecture, even the weakest signals generated by modern vehicles — reverse, left turn, right turn, daytime running light (DRL), brake and tail light — are enough to switch on full-power, high-intensity lighting on your trailer and the towed caravan. There is no voltage drop, no flickering and no error codes caused by the low-current outputs of today's CAN-bus and PWM lighting systems.

For added convenience, the kit is equipped with an independent control switch, allowing you to operate the rear lighting of the trailer or towed unit directly — ideal for parking, night-time loading, roadside inspection or camping, without having to sit in the cab and work the vehicle's own controls.

We support OEM and ODM customization for this Towing Kit to meet specific client requirements. To obtain an accurate quotation, please provide the target connector type, required cable length, and any specific electrical ratings. Our facility operates under an ISO 9001-certified quality management system and has been audited by TÜV Rheinland. All raw materials are RoHS compliant, with supplier SGS RoHS test reports available for applicable wire materials. Please contact us with your technical specifications to proceed with your order.

Key Features

• Product Type: Identified as a Towing Kit, specifically an adapter cable for car-to-trailer lighting applications.
• IP67 Waterproof Rating: Dust-tight and resistant to temporary water immersion, ensuring stable operation in wet, muddy and high-pressure washing environments.
• Independent Power Supply (Relay-Driven): Operating current is drawn directly from the vehicle battery instead of the car's lighting circuit, so even weak trigger signals deliver full-power, high-intensity lighting to your trailer and towed caravan — no dimming, no flicker, no overload of the vehicle's original wiring.
• Full Lighting Signal Transmission: Reliably transfers reverse, left turn, right turn, daytime running light (DRL), brake and tail light signals, keeping the trailer's lamps perfectly synchronized with the towing vehicle.
• Independent Control Switch: A built-in dedicated switch lets you conveniently turn the rear lighting of the trailer or towed unit on and off at any time, for parking, loading, inspection or camping use.
• Application: Designed for both aftermarket trailer retrofits and factory (OEM) vehicle designs, bridging electrical connections between automotive lighting systems and trailer units.
• Availability: Offered in wholesale quantities to support bulk procurement needs for industrial and automotive sectors.
• Quality Management: Manufactured within an ISO 9001-certified quality management system for consistent production standards.
• Compliance: Utilizes raw materials that are RoHS compliant, with supplier SGS test reports available for applicable wire materials.