A 3-in-1 air brake and electrical line connects a semi-truck to its trailer, bundling three key components into a single spiral-wrapped assembly. It provides the air needed to stop the vehicle and the power required for signaling and monitoring.
The “3” lines are as follows:
- Emergency Air Line (Red): Also known as the supply line, it continuously supplies air pressure from the tractor to the trailer's air tanks, keeping the trailer brakes released and ready to stop.
- Service Air Line (Blue): Also known as the control line, it applies and adjusts the trailer brakes when the driver presses the brake pedal in the cab.
- Electrical Cable (Yellow or Green): A standard 7-way electrical cord that powers the trailer's brake lights, turn signals, clearance lights, and anti-lock braking system (ABS).
Bundling these into a single "3-in-1" unit provides a cleaner setup, protects the lines from tangling or dragging, and prevents abrasion damage.
3 in 1 Airbrake and Electrical Lines should meet or exceed the following standards:
1. SAE J2349 is the standard that establishes the minimum performance requirements and uniform test procedures for electric and electro-pneumatic windshield wipers and washer switches on heavy-duty vehicles. It applies to commercial vehicles, ensuring that safety-critical components such as windshield wipers operate reliably under harsh environmental and mechanical conditions.
2. SAE J560 is the North American standard for the 7-pin electrical connections used between heavy-duty commercial trucks and trailers. It establishes dimensions, design, and performance requirements for jumper cables, plugs, and receptacles to reliably transfer lighting signals and ABS power. The 7-pin layout manages ground return, taillights, left/right turn signals, stop lights, auxiliary power, and ABS supplemental power. Plugs and receptacles conforming to SAE J560 are designed to be universally interchangeable.
In the heavy-duty trucking industry, reliable connections between the tractor and trailer are essential for safety, compliance, and operational efficiency. Every mile travelled depends on dependable air brake performance and uninterrupted electrical communication. That is why fleets, owner-operators, and maintenance professionals rely on solutions that combine durability, flexibility, and ease of use.
Fairview’s AIRLECTRIC® 3-in-1 Air Brake & Electrical Lines are engineered to simplify and protect critical connections between the tractor and trailer, helping reduce downtime and improve reliability on the road. Their live swivel ends prevent tangling and significantly decrease connection time. Connect faster and run smarter. Contact your local Fairview branch for more information.
3-in-1 Airbrake & Electrical Line
One Connection. Complete Control.
A 3-in-1 air brake and electrical line connects a semi-truck to its trailer, bundling three key components into a single spiral-wrapped assembly. It provides the air needed to stop the vehicle and the power required for signaling and monitoring.
The “3” lines are as follows:
- Emergency Air Line (Red): Also known as the supply line, it continuously supplies air pressure from the tractor to the trailer's air tanks, keeping the trailer brakes released and ready to stop.
- Service Air Line (Blue): Also known as the control line, it applies and adjusts the trailer brakes when the driver presses the brake pedal in the cab.
- Electrical Cable (Yellow or Green): A standard 7-way electrical cord that powers the trailer's brake lights, turn signals, clearance lights, and anti-lock braking system (ABS).
Bundling these into a single "3-in-1" unit provides a cleaner setup, protects the lines from tangling or dragging, and prevents abrasion damage.
3 in 1 Airbrake and Electrical Lines should meet or exceed the following standards:
1. SAE J2349 is the standard that establishes the minimum performance requirements and uniform test procedures for electric and electro-pneumatic windshield wipers and washer switches on heavy-duty vehicles. It applies to commercial vehicles, ensuring that safety-critical components such as windshield wipers operate reliably under harsh environmental and mechanical conditions.
2. SAE J560 is the North American standard for the 7-pin electrical connections used between heavy-duty commercial trucks and trailers. It establishes dimensions, design, and performance requirements for jumper cables, plugs, and receptacles to reliably transfer lighting signals and ABS power. The 7-pin layout manages ground return, taillights, left/right turn signals, stop lights, auxiliary power, and ABS supplemental power. Plugs and receptacles conforming to SAE J560 are designed to be universally interchangeable.
In the heavy-duty trucking industry, reliable connections between the tractor and trailer are essential for safety, compliance, and operational efficiency. Every mile travelled depends on dependable air brake performance and uninterrupted electrical communication. That is why fleets, owner-operators, and maintenance professionals rely on solutions that combine durability, flexibility, and ease of use.
Fairview’s AIRLECTRIC® 3-in-1 Air Brake & Electrical Lines are engineered to simplify and protect critical connections between the tractor and trailer, helping reduce downtime and improve reliability on the road. Their live swivel ends prevent tangling and significantly decrease connection time. Connect faster and run smarter. Contact your local Fairview branch for more information.
