The 7-pin round RV connector (SAE J2863) is the standard trailer interface for travel trailers, fifth wheels, horse trailers, and heavy-duty towing across North America. The round 7-pin design provides all four basic lighting circuits plus electric brake control, 12V auxiliary power for charging the trailer battery, and a reverse/backup light circuit. The connector uses heavy-duty blade contacts rated at 40 amps on the power circuits and features a center ground pin surrounded by six function pins in a standardized arrangement. The vehicle-side connector typically includes a spring-loaded cover for weather protection. Required for any trailer with electric brakes or an onboard battery system, the 7-pin round is the most common heavy towing connector and is pre-installed on most pickup trucks and SUVs equipped with a tow package.
Specifications
Pin Count
7
Wire Gauge Range
14–10 AWG
Voltage Rating
12 VDC
Current Rating
40A continuous
IP Rating
IP44
Mating Cycles
1000
Operating Temp
-40°C to +85°C
Key Features
SAE J2863 standard for heavy-duty towing
Seven circuits including electric brakes and aux power
Heavy-duty blade contacts rated up to 40A
Pre-installed on most tow-package-equipped vehicles
Spring-loaded cover for weather protection
Center ground pin with six surrounding function pins
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