TRAILER WIRING - 35FT MAIN - (1-10 GAUGE & 6-12 GAUGE) MAIN HARNESS

Grote 66710 35’ Ultra-Blue-Seal® Doubles Main Harness – 7-Wire Modular System

The Standard in Modular Trailer Wiring The Grote 66710 is the backbone of a high-performance electrical system. As part of the Ultra-Blue-Seal® family, this 35-foot main harness is designed to deliver consistent power to all trailer lighting and auxiliary functions. Its "Doubles Main" configuration makes it the ideal choice for operators running multi-trailer setups who require long-distance reliability and easy maintenance.

Extreme Protection Against the Elements Standard wiring often fails due to moisture intrusion and chemical corrosion. The Grote 66710 utilizes UBS technology, featuring sealed integrated connectors that create a fortress against road salt, grime, and water. The heavy-duty GPT wire jacket ensures the harness remains flexible and durable even in the harshest North American climates.

Key Features & Benefits:

• 35-Foot Extended Length: Specifically sized for doubles configurations, ensuring full-length coverage without the need for multiple extra jumpers.
• Ultra-Blue-Seal® Reliability: Specialized sealed connectors eliminate "wicking" and prevent corrosion from spreading through the system.
• 7-Wire System: Fully compatible with standard 7-way electrical systems for comprehensive control of STT, marker, and auxiliary lights.
• Modular "Plug-and-Go" Design: Allows for rapid installation and easy replacement of sections, significantly reducing vehicle downtime.
• Rugged Construction: Built with 10, and 12-gauge GPT wire to handle high-amp loads and resist physical abrasion.

Technical Specifications:

• Part Number: 66710
• Series: Ultra-Blue-Seal® (UBS)
• Length: 35' (10.6 m)
• Wire Gauge: 10 GA (1), 12 GA (6)
• Wire Material: GPT
• Number of Wires: 7-Wire System
• Configuration: Doubles Main